Plants of the Credit River Watershed - Credit Valley Conservation
Plants of the Credit River Watershed - Credit Valley Conservation
Plants of the Credit River Watershed - Credit Valley Conservation
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<strong>Plants</strong> <strong>of</strong> <strong>the</strong><br />
<strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
2002
PLANTS<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
A vascular plant flora has been compiled for <strong>the</strong> Region <strong>of</strong> Peel and <strong>the</strong><br />
<strong>Credit</strong> <strong>River</strong> watershed, based largely on an updating <strong>of</strong> <strong>the</strong> Peel<br />
County flora published by Jocelyn Webber in 1984. Published floras for<br />
jurisdictions adjacent to Peel, including <strong>the</strong> Regional Municipality <strong>of</strong><br />
Halton (Crins, 1986) and Wellington County (Stroud, 1941) were<br />
examined for relevant records within <strong>the</strong> <strong>Credit</strong> <strong>River</strong> watershed and a<br />
large number <strong>of</strong> naturalists and botanical specialists were consulted to<br />
identify additional data and records <strong>of</strong> vascular plants in <strong>the</strong> areas<br />
under consideration.<br />
A total <strong>of</strong> 1205 vascular plant species were identified as growing<br />
outside cultivation in <strong>the</strong> jurisdiction <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong><br />
(CVC). In <strong>the</strong>se local floras, 780 are native species in <strong>the</strong> CVC within<br />
<strong>the</strong> <strong>Credit</strong> <strong>River</strong> watershed, two vascular plants have been designated<br />
species <strong>of</strong> special concern by <strong>the</strong> Committee on <strong>the</strong> Status <strong>of</strong><br />
Endangered Wildlife in Canada, ginseng (Panax quinquefolius) and a<br />
pondweed (Potamogeton hillii). Fifteen (15) species within <strong>the</strong> <strong>Credit</strong><br />
<strong>River</strong> watershed are considered provincially rare by <strong>the</strong> Ministry <strong>of</strong><br />
Natural Resources. A relatively large proportion <strong>of</strong> <strong>the</strong> native species,<br />
in total 335 species, are considered rare in <strong>the</strong> Greater Toronto Area<br />
while 402 are rare within <strong>the</strong> watershed.<br />
The following tables summarize <strong>the</strong><br />
vascular plant flora in <strong>the</strong> <strong>Credit</strong><br />
<strong>River</strong> watershed and Peel Region<br />
and <strong>the</strong>ir status.<br />
1 2<br />
7<br />
5<br />
1. marsh marigold<br />
2. white trilliums<br />
3. pitcher plant<br />
4. American elm<br />
5. eastern white<br />
cedar<br />
Key to Cover<br />
8<br />
3<br />
6<br />
9<br />
4<br />
10<br />
6. field thistle<br />
7. fiddleheads<br />
8. coniferous<br />
swamp<br />
9. white water lily<br />
10. highbush<br />
cranberry
The following definitions have been provided to help better understand <strong>the</strong><br />
information contained in <strong>the</strong> tables <strong>of</strong> vascular plants for <strong>the</strong> watershed.<br />
Rarity Codes<br />
G-Rank<br />
A network <strong>of</strong> natural heritage programs, scientific experts and The Nature Conservancy<br />
develops G-Rank or global ranks. The ranking is based on <strong>the</strong> range-wide status <strong>of</strong> a<br />
species, subspecies or variety.<br />
Codes<br />
G1 Extremely Rare; usually 5 or fewer occurrences in <strong>the</strong> overall range or very few<br />
remaining individuals; or because <strong>of</strong> some factor(s) making it especially<br />
vulnerable to extinction.<br />
G2 Very Rare; usually between 5 and 20 occurrences in <strong>the</strong> overall range or with<br />
many individuals in fewer occurrences; or because <strong>of</strong> some factor(s) making it<br />
vulnerable to extinction.<br />
G3 Rare to uncommon; usually between 20 and 100 occurrences; may have fewer<br />
occurrences, but with a large number <strong>of</strong> individuals in some populations; may be<br />
susceptible to large-scale disturbances.<br />
G4 Common; usually more than 100 occurrences; usually not susceptible to<br />
immediate threats.<br />
G5 Very common; demonstrable secure under present conditions.<br />
GU Status uncertain; <strong>of</strong>ten because <strong>of</strong> low search efforts or cryptic nature <strong>of</strong> <strong>the</strong><br />
species; more data needed.<br />
G? Unranked; or, if following a ranking, rank tentatively assigned (e.g. G3?)<br />
G A “G” (or “T”) followed by a blank space means that <strong>the</strong> NHIC has not yet<br />
obtained <strong>the</strong> Global Rank from <strong>the</strong> Nature Conservancy.<br />
Q Denotes that <strong>the</strong> taxonomic status <strong>of</strong> <strong>the</strong> species, subspecies, or variety is<br />
questionable.<br />
T Denotes that <strong>the</strong> rank applies to a subspecies or variety.<br />
KEY TO TABLES<br />
S-Rank<br />
S-Rank - are provincial ranks (or Sub national ranks) that are used by <strong>the</strong> Natural Heritage<br />
Information Centre to set protection priorities for rare species and natural communities.<br />
The ranks are assigned based upon recent records.<br />
Codes<br />
S1 Extremely Rare; usually 5 or fewer occurrences in <strong>the</strong> province or very few<br />
remaining individuals; <strong>of</strong>ten especially vulnerable to extirpation.<br />
S2 Very Rare; usually between 5 and 20 occurrences in <strong>the</strong> province or with many<br />
individuals in fewer occurrences; <strong>of</strong>ten susceptible to extirpation.<br />
S3 Rare to Uncommon; usually between 20 and 100 occurrences in <strong>the</strong> province;<br />
may have fewer occurrences, but with a large number <strong>of</strong> individuals in some<br />
populations; may be susceptible to large-scale disturbances.<br />
S4 Common; usually more than 100 occurrences; usually not susceptible to<br />
immediate threats.<br />
S5 Very Common; demonstrably secure under present conditions.<br />
SE Exotic. Not believed to be a part <strong>of</strong> Ontario’s natural flora.<br />
SH Historical; <strong>of</strong> only historical occurrence in <strong>the</strong> province (no occurrences<br />
verified in <strong>the</strong> past 20 years), but with expectation that it may still be extant.<br />
C Captive/Cultivated; existing in <strong>the</strong> province only in a cultivated state;<br />
introduced population may not yet be fully established.<br />
The provincial ranking, <strong>the</strong> “S-Rank,” is an estimate <strong>of</strong> <strong>the</strong> abundance for each plant and<br />
should not be confused with <strong>the</strong> rarity designation, although <strong>the</strong>re is a relationship between<br />
<strong>the</strong> two. As presently treated, any plant with an S-Rank <strong>of</strong> S1, S2 or S3 is designated<br />
provincially rare.
COSEWIC<br />
Status assigned by <strong>the</strong> Committee on <strong>the</strong> Status <strong>of</strong> Endangered Wildlife in Canada,<br />
following <strong>the</strong> 1996 COSEWIC List.<br />
Codes<br />
END Endangered - any indigenous species <strong>of</strong> fauna or flora threatened with imminent<br />
extinction or extirpation throughout all or a significant portion <strong>of</strong> its Canadian<br />
range.<br />
THR Threatened -any indigenous species <strong>of</strong> fauna or flora that is likely to become<br />
endangered if <strong>the</strong> factors affecting its vulnerability do not become reversed.<br />
VUL Vulnerable - any indigenous species <strong>of</strong> fauna or flora that is particularly at risk<br />
because <strong>of</strong> low or declining numbers, occurrence at <strong>the</strong> fringe <strong>of</strong> its range or in<br />
restricted areas or for some o<strong>the</strong>r reason, but is not a threatened species.<br />
NAR Not At Risk - <strong>the</strong> status has been reviewed and <strong>the</strong> species is not threatened.<br />
Prov Status<br />
Rare Any plant species with an S-Rank <strong>of</strong> S1, S2 or S3.<br />
GTA Status<br />
Rare A species that occurs at fewer than 40 locations in <strong>the</strong> Greater Toronto Area<br />
(location is defined by an exclusion zone with a 1km radius around each known<br />
location for a given species.)<br />
Peel Status<br />
Rare A species that occurs at fewer than 11 locations Peel.<br />
<strong>Credit</strong> <strong>Watershed</strong> Status<br />
Rare A species that occurs at fewer than 11 locations in <strong>the</strong> watershed or fewer than<br />
6 locations in <strong>the</strong> Region <strong>of</strong> Halton.<br />
Non-Native Status<br />
Yes Species is non-native; it has been introduced to <strong>the</strong> <strong>Credit</strong> <strong>River</strong> watershed<br />
No Species is native to <strong>the</strong> <strong>Credit</strong> <strong>River</strong> watershed<br />
Peel Region<br />
Yes Species is found within Peel Region<br />
No Species is not found within <strong>the</strong> Peel Region<br />
CVC<br />
Yes Species is found within <strong>the</strong> <strong>Credit</strong> <strong>River</strong> watershed boundary (i.e. CVC<br />
jurisdiction.)<br />
No Species is not found within <strong>the</strong> <strong>Credit</strong> <strong>River</strong> watershed boundary (i.e. CVC<br />
jurisdiction.)
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
aquatic forbs A non-woody, broad-leaved plant living or growing in water.<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
water-shield Brasenia schreberi G5 S5 rare rare No Yes No<br />
water arum Calla palustris G5 S5 No Yes Yes<br />
marsh water-starwort Callitriche palustris G5 S5 rare rare No Yes Yes<br />
common coontail Ceratophyllum demersum G5 S5 rare No Yes Yes<br />
Canada waterweed Elodea canadensis G5 S5 rare No Yes Yes<br />
water star-grass Heteran<strong>the</strong>ra dubia G5 S5 rare rare No Yes Yes Synonym: Zosterella dubia<br />
mare's-tail Hippuris vulgaris G5 S5 rare rare No Yes Yes<br />
common duckweed Lemna minor G5 S5 No Yes Yes<br />
star duckweed Lemna trisulca G5 S5 rare No Yes Yes<br />
nor<strong>the</strong>rn water-milfoil Myriophyllum sibiricum G5 S5 rare rare No Yes Yes Synonym: Myriophyllum exalbescens<br />
Eurasian water-milfoil Myriophyllum spicatum G? SE5 Yes Yes Yes<br />
whorled water-milfoil Myriophyllum verticillatum G5 S5 rare rare No Yes Yes<br />
slender naiad Najas flexilis G5 S5 rare rare No Yes Yes<br />
small-leaved water cress Nasturtium microphyllum G? SE5 Yes Yes Yes<br />
yellow water-lily Nuphar variegatum G5 S5 rare No Yes Yes<br />
white water-lily Nymphaea odorata G5 S5 rare No Yes Yes Synonym: Nymphaea tuberosa<br />
water smartweed Polygonum amphibium G5 S5 No Yes Yes Synonyms: Polygonum coccineum, Polygonum natans<br />
large-leaved pondweed Potamogeton amplifolius G5 S5 rare rare No Yes No<br />
narrow-leaved pondweed Potamogeton berchtoldii G? S4S5 rare rare No Yes No Synonym: Potamogeton pusillus var. tenuissimus<br />
curly-leaved pondweed Potamogeton crispus G5 SE5 Yes Yes Yes<br />
ribbonleaf pondweed Potamogeton epihydrus G5 S4S5 rare rare No Yes No Historic record - 1907<br />
leafy pondweed Potamogeton foliosus G5 S5 rare No Yes Yes<br />
variable-leaved pondweed Potamogeton gramineus G5 S5 rare rare No Yes Yes<br />
Hill's pondweed Potamogeton hillii G3 S2 vulnerable rare rare rare No Yes Yes<br />
Illinois pondweed Potamogeton illinoensis G5 S4 rare rare No Yes Yes<br />
floating pondweed Potamogeton natans G5 S5 No Yes Yes<br />
knotty pondweed Potamogeton nodosus G5 S5 rare rare No Yes Yes<br />
sago pondweed Potamogeton pectinatus G5 S5 No Yes Yes<br />
white-stemmed pondweed Potamogeton praelongus G5 S4S5 rare rare No Yes No<br />
small pondweed Potamogeton pusillus var. pusillus G5 S4S5 rare rare No Yes No Historic record - 1895<br />
Richardson's pondweed Potamogeton richardsonii G5 S5 rare rare No Yes Yes<br />
spiral pondweed Potamogeton spirillus G5 S4S5 rare rare No Yes No Historic record - 1895<br />
flat-stemmed pondweed Potamogeton zosteriformis G5 S5 rare rare No Yes Yes<br />
white water crowfoot Ranunculus aquatilis var. diffusus G5T S5 rare rare No Yes Yes Synonym: Ranunculus longirostris<br />
arrowhead Sagittaria cuneata G5 S4? rare rare No Yes No<br />
grass-leaved arrowhead Sagittaria graminea var. graminea G5T5 S4S5 rare rare No Yes Yes<br />
broad-leaved arrowhead Sagittaria latifolia G5 S5 No Yes Yes<br />
sessile-fruited arrowhead Sagittaria rigida G5 S4 rare rare No Yes Yes<br />
greater duckweed Spirodela polyrhiza G5 S5 No Yes Yes<br />
flat-leaved bladderwort Utricularia intermedia G5 S4 rare rare No Yes No<br />
small bladderwort Utricularia minor G5 S5 rare rare No Yes No<br />
common bladderwort Utricularia vulgaris G5 S5 rare No Yes Yes<br />
watermeal Wolffia arrhiza G5 S4S5 rare rare No Yes Yes Synonym: Wolffia columbiana<br />
common watermeal Wolffia borealis G5 S4S5 rare rare No Yes Yes Synonym: Wolffia punctata<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 1<br />
G-Rank<br />
S-Rank<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
horned pondweed Zannichellia palustris G5 S4 rare rare No Yes Yes<br />
ferns A plant with leaf-like fronds that reproduces using spores.<br />
S-Rank<br />
COSEWIC<br />
maidenhair fern Adiantum pedatum G5 S5 No Yes Yes<br />
ebony spleenwort Asplenium platyneuron G5 S4 rare rare No Yes Yes Alternative name author - (L.) Oakes ex D.Eaton<br />
walking fern Asplenium rhizophyllum G5 S4 rare rare No Yes Yes Synonym: Camptosorus rhizophyllus<br />
hart's-tongue fern Asplenium scolopendrium var. americanum G5T3 S3 rare rare rare No Yes Yes Synonym: Phyllitis scolopendrium<br />
maidenhair spleenwort Asplenium trichomanes G4G5 SU rare rare No Yes Yes<br />
green spleenwort Asplenium trichomanes-ramosum G4 S4 rare rare No Yes Yes Synonym: Asplenium viride<br />
lady fern Athyrium filix-femina var. angustum G5T5 S5 No Yes Yes Synonym: Athyrium angustum<br />
cut-leaved grape fern Botrychium dissectum G5 S5 rare rare No Yes Yes Synonyms: Botrychium dissectum var. obliquum,<br />
narrow-leaved moonwort Botrychium lanceolatum ssp. angustisegmentum G5T4 S3 rare rare rare No Yes No Historic record - 1924<br />
daisy-leaf grape fern Botrychium matricariifolium G5 S4S5 rare rare No Yes Yes<br />
lea<strong>the</strong>ry grape fern Botrychium multifidum G5 S5 rare rare No Yes Yes<br />
least moonwort Botrychium simplex G5 S4? rare rare No Yes Yes<br />
rattlesnake fern Botrychium virginianum G5 S5 No Yes Yes<br />
slender cliff-brake Cryptogramma stelleri G5 S4S5 rare rare No Yes Yes<br />
bulblet fern Cystopteris bulbifera G5 S5 No Yes Yes<br />
Mackay's fragile fern Cystopteris tenuis G4G5 S5 No Yes Yes Synonym: Cystopteris fragilis var. mackayi<br />
hay-scented fern Dennstaedtia punctilobula G5 S5 rare rare No Yes Yes<br />
silvery glade fern Deparia acrostichoides G5 S4 rare No Yes Yes Synonym: Athyrium <strong>the</strong>lypterioides<br />
glade fern Diplazium pycnocarpon G5 S4 rare rare No Yes Yes Synonym: Athyrium pycnocarpon<br />
spinulose woodfern Dryopteris carthusiana G5 S5 No Yes Yes Synonym: Drypoteris spinulosa<br />
Clinton's woodfern Dryopteris clintoniana G5 S4 rare No Yes Yes<br />
crested woodfern Dryopteris cristata G5 S5 No Yes Yes<br />
male fern Dryopteris filix-mas G5 S4 rare rare No No Yes<br />
Goldie's fern Dryopteris goldiana G4 S4 rare rare No Yes Yes<br />
evergreen woodfern Dryopteris intermedia G5 S5 No Yes Yes<br />
marginal woodfern Dryopteris marginalis G5 S5 No Yes Yes<br />
hybrid woodfern Dryopteris x boottii HYB S2 No Yes Yes = Dryopteris cristata x Dryopteris intermedia<br />
triploid woodfern Dryopteris x triploidea HYB S1 No Yes Yes = Dryopteris carthusiana x Dryopteris intermedia<br />
hybrid woodfern Dryopteris x uliginosa HYB S2? No Yes Yes = Dryopteris carthusiana x Dryopteris cristata<br />
oak fern Gymnocarpium dryopteris G5 S5 No Yes Yes<br />
water-clover Marsilea quadrifolia G5 SE1 Yes Yes Yes<br />
ostrich fern Matteuccia struthiopteris G5 S5 No Yes Yes<br />
sensitive fern Onoclea sensibilis G5 S5 No Yes Yes<br />
nor<strong>the</strong>rn adder's-tongue Ophioglossum pusillum G5 S4S5 rare rare No Yes Yes Synonym: Ophioglossum vulgatum <strong>of</strong> ON reports<br />
cinnamon fern Osmunda cinnamomea G5 S5 No Yes Yes<br />
interrupted fern Osmunda claytoniana G5 S5 rare rare No Yes Yes<br />
royal fern Osmunda regalis var. spectabilis G5T5 S5 rare No Yes Yes<br />
smooth cliff-brake Pellaea glabella ssp. glabella G5 S4 rare rare No Yes Yes<br />
nor<strong>the</strong>rn beech fern Phegopteris connectilis G5 S5 rare rare No Yes Yes Synonym: Thelypteris phegopteris<br />
rock polypody Polypodium virginianum G5 S5 rare rare No Yes Yes Synonym: Polypodium vulgare var. virginianum<br />
Christmas fern Polystichum acrostichoides G5 S5 No Yes Yes<br />
Bracken Pteridium aquilinum var. latiusculum G5 S5 No Yes Yes<br />
New York fern Thelypteris noveboracensis G5 S4S5 rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 2<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
marsh fern Thelypteris palustris var. pubescens G5 S5 No Yes Yes<br />
Virginia chain-fern Woodwardia virginica G5 S4 rare rare No Yes Yes<br />
fern allies A plant that reproduces using spores that do not have fronds, including clubmosses and horsetails.<br />
COSEWIC<br />
crowfoot clubmoss Diphasiastrum digitatum G5 S5 No Yes Yes<br />
Synonyms: Lycopodium digitatum, Lycopodium<br />
flabelliforme<br />
field horsetail Equisetum arvense G5 S5 No Yes Yes<br />
water horsetail Equisetum fluviatile G5 S5 rare No Yes Yes<br />
common scouring-rush Equisetum hyemale ssp. affine G5T5 S5 No Yes Yes<br />
smooth scouring-rush Equisetum laevigatum G5 S4 rare rare No Yes Yes<br />
marsh horsetail Equisetum palustre G5 S5 rare rare No Yes Yes<br />
meadow horsetail Equisetum pratense G5 S5 rare rare No Yes Yes<br />
dwarf scouring-rush Equisetum scirpoides G5 S5 rare No Yes Yes<br />
woodland horsetail Equisetum sylvaticum G5 S5 rare No Yes Yes<br />
variegated scouring-rush Equisetum variegatum ssp. variegatum G5 S5 rare No Yes Yes<br />
shining clubmoss Huperzia lucidula G5 S5 No Yes Yes Synonym: Lycopodium lucidulum<br />
stiff clubmoss Lycopodium annotinum G5 S5 rare rare No Yes Yes<br />
running clubmoss Lycopodium clavatum G5 S5 rare rare No Yes Yes<br />
round-branched clubmoss Lycopodium dendroideum G5 S5 No Yes Yes<br />
ground-pine Lycopodium obscurum G5 S4 rare rare No Yes Yes<br />
meadow spikemoss Selaginella eclipes G4 S4 rare rare No Yes Yes<br />
Synonyms: Selaginella apus, Selaginella apoda / Historic<br />
record - 1945<br />
forbs A non-woody, broad-leaved plant or herb.<br />
velvet-leaf Abutilon <strong>the</strong>ophrasti G? SE5 Yes Yes Yes<br />
three-seeded mercury Acalypha virginica var. rhomboidea G5 S5 No Yes Yes Synonym: Acalypha rhomboidea<br />
common yarrow Achillea millefolium ssp. millefolium G5T? SE? Yes Yes Yes<br />
sweet flag Acorus americanus G5 S4 rare rare No Yes Yes Synonym: Acorus calamus <strong>of</strong> PCF<br />
doll's-eyes Actaea pachypoda G5 S5 No Yes Yes Synonym: Actaea alba<br />
baneberry Actaea rubra G5 S5 No Yes Yes<br />
hybrid baneberry Actaea x ludovici HYB S1 No Yes Yes = Actaea pachypoda x Actaea rubra<br />
goutweed Aegopodium podagraria G? SE5 Yes Yes Yes<br />
common agrimony Agrimonia gryposepala G5 S5 No Yes Yes<br />
corn-cockle Agrostemma githago G? SE3 Yes Yes No Historic record - 1910<br />
creeping bugleweed Ajuga reptans G? SE2 Yes Yes Yes<br />
hollyhock Alcea rosea GU SE4 Yes Yes Yes Synonym: Althaea rosea<br />
common water-plantain Alisma plantago-aquatica G5 S5 No Yes Yes<br />
Synonyms: Alisma parviflorum, Alisma subcordatum,<br />
Alisma triviale<br />
garlic mustard Alliaria petiolata G5 SE5 No Yes Yes Synonym: Alliaria <strong>of</strong>ficinalis<br />
chives Allium schoenoprasum G5 SE2 Yes Yes Yes<br />
wild leek Allium tricoccum G5 S5 No Yes Yes<br />
yellow alyssum Alyssum alyssoides G? SE5 Yes Yes Yes<br />
tumble pigweed Amaranthus albus G5 SE5 Yes Yes Yes<br />
prostrate pigweed Amaranthus blitoides G? SE4? Yes Yes Yes Synonym: Amaranthus graecizans <strong>of</strong> ON reports<br />
smooth pigweed Amaranthus hybridus G? SE5? Yes Yes No Historic record - 1889<br />
green pigweed Amaranthus powellii G5 SE5 Yes Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 3<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
redroot pigweed Amaranthus retr<strong>of</strong>lexus G? SE5 Yes Yes Yes<br />
common ragweed Ambrosia artemisiifolia G5 S5 No Yes Yes<br />
giant ragweed Ambrosia trifida G5 S5 No Yes Yes<br />
hog-peanut Amphicarpaea bracteata G5 S5 No Yes Yes<br />
scarlet pimpernel Anagallis arvensis G? SE4 Yes Yes Yes<br />
pearly everlasting Anaphalis margaritacea G5 S5 No Yes Yes<br />
small bugloss Anchusa arvensis G? SE3 Yes Yes Yes Synonym: Lycopsis arvensis / Historic record - 1912<br />
fairy-bells Androsace septentrionalis G5 S4? rare rare No Yes No<br />
sharp-lobed hepatica Anemone acutiloba G5 S5 No Yes Yes Synonym: Hepatica acutiloba<br />
round-lobed hepatica Anemone americana G? S5 rare rare No Yes Yes Synonym: Hepatica americana<br />
Canada anemone Anemone canadensis G5 S5 No Yes Yes<br />
thimbleweed Anemone cylindrica G5 S4 rare No Yes No<br />
cut-leaved anemone Anemone multifida var. multifida G5 S5 rare rare No Yes No<br />
wood anemone Anemone quinquefolia var. quinquefolia G5 S5 No Yes Yes<br />
Virginia thimbleweed Anemone virginiana var. virginiana G5 S5 No Yes Yes Synonym: Anemone riparia<br />
purple-stemmed angelica Angelica atropurpurea G5 S5 rare rare No Yes Yes<br />
field pussytoes Antennaria neglecta G5 S5 No Yes Yes<br />
plantain-leaved pussytoes Antennaria parlinii ssp. fallax G4G5 S5 No Yes Yes Synonym: Antennaria plantaginifolia<br />
corn chamomille An<strong>the</strong>mis arvensis G? SE5 Yes Yes Yes<br />
stinking mayweed An<strong>the</strong>mis cotula G5 SE5 Yes Yes Yes<br />
yellow chamomille An<strong>the</strong>mis tinctoria G? SE1 Yes Yes Yes<br />
wild chervil Anthriscus sylvestris G? SE4? Yes Yes Yes<br />
ground-nut Apios americana G5 S5 rare rare No Yes Yes<br />
spreading dogbane Apocynum androsaemifolium ssp. androsaemifolium G5 S5 No Yes Yes<br />
indian-hemp Apocynum cannabinum var. cannabinum G5 S5 No Yes Yes Synonym: Apocynum sibiricum<br />
wild columbine Aquilegia canadensis G5 S5 No Yes Yes<br />
European columbine Aquilegia vulgaris G? SE3 Yes Yes Yes<br />
mouse-ear cress Arabidopsis thaliana G? SE5 Yes Yes Yes<br />
alpine rockcress Arabis alpina ssp. caucasica G5T? SE2 Yes Yes Yes Synonym: Arabis caucasica<br />
sicklepod Arabis canadensis G5 S4 rare rare No Yes Yes Historic record - 1938<br />
tower mustard Arabis glabra G5 S5 rare rare No Yes Yes<br />
hairy rockcress Arabis hirsuta ssp. pycnocarpa G5 S5 rare rare No Yes Yes Synonym: Arabis pycnocarpa<br />
smooth rockcress Arabis laevigata G5 S5 rare rare No Yes Yes<br />
wild sarsaparilla Aralia nudicaulis G5 S5 No Yes Yes<br />
spikenard Aralia racemosa ssp. racemosa G5 S5 rare No Yes Yes<br />
dwarf mistletoe Arceuthobium pusillum G5 S5 rare rare No Yes No Historic record - 1907<br />
great burdock Arctium lappa G? SE5 Yes Yes Yes<br />
common burdock Arctium minus ssp. minus G? SE5 Yes Yes Yes<br />
thyme-leaved sandwort Arenaria serpyllifolia G? SE5 Yes Yes Yes<br />
dragon's-mouth Arethusa bulbosa G5 S4 rare rare No Yes No Historic record - 1907<br />
jack-in-<strong>the</strong>-pulpit Arisaema triphyllum ssp. triphyllum G5 S5 No Yes Yes Synonym: Arisaema atrorubens<br />
horseradish Armoracia rusticana G? SE4 Yes Yes Yes Synonym: Armoracia lapathifolia / Historic record - 1927<br />
sou<strong>the</strong>rn wormwood Artemisia abrotanum G? SE1 Yes Yes No Historic record - 1891<br />
absinth Artemisia absinthium G? SE3? Yes Yes No Historic record - 1906<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 4<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
sweet wormwood Artemisia annua G5 SE1 Yes Yes No Historic record - 1911<br />
biennial wormwood Artemisia biennis G5 SE5 Yes Yes Yes<br />
tall wormwood Artemisia campestris ssp. caudata G5 S4S5 rare rare No Yes Yes Synonym: Artemisia caudata<br />
western mugwort Artemisia ludoviciana G5 S4? Yes Yes Yes<br />
Roman wormweed Artemisia pontica G? SE2? Yes Yes No<br />
common mugwort Artemisia vulgaris G? SE5 Yes Yes Yes<br />
goat's-beard Aruncus dioicus G5 SE1 Yes Yes Yes<br />
wild ginger Asarum canadense G5 S5 No Yes Yes<br />
poke milkweed Asclepias exaltata G5 S4 rare rare No Yes Yes<br />
swamp milkweed Asclepias incarnata ssp. incarnata G5 S5 No Yes Yes<br />
common milkweed Asclepias syriaca G5 S5 No Yes Yes<br />
butterfly weed Asclepias tuberosa G5 S4 rare rare No Yes Yes Historic record - 1932<br />
asparagus Asparagus <strong>of</strong>ficinalis G5? SE5 Yes Yes Yes<br />
bog aster Aster borealis G5 S5 rare rare No Yes Yes<br />
rayless aster Aster brachyactis G5 S3? Yes Yes Yes<br />
heart-leaved aster Aster cordifolius G5 S5 No Yes Yes<br />
heath aster Aster ericoides ssp. ericoides G5 S5 No Yes Yes Synonym: Virgulus ericoides<br />
panicled aster Aster lanceolatus ssp. lanceolatus G5 S5 No Yes Yes Synonym: Aster simplex<br />
calico aster Aster lateriflorus var. lateriflorus G5 S5 No Yes Yes<br />
large-leaved aster Aster macrophyllus G5 S5 No Yes Yes<br />
New England aster Aster novae-angliae G5 S5 No Yes Yes Synonym: Virgulus novae-angliae<br />
azure aster Aster oolentangiensis G5 S4 rare rare No Yes Yes Synonym: Aster azureus<br />
white heath aster Aster pilosus var. pilosus G5 S5 rare rare No Yes Yes<br />
purple-stemmed aster Aster puniceus var. puniceus G5 S5 No Yes Yes<br />
flat-topped aster Aster umbellatus var. umbellatus G5 S5 rare No Yes Yes<br />
arrow-leaved aster Aster urophyllus G4 S4 rare rare No Yes Yes Synonym: Aster sagittifolius<br />
amethyst aster Aster x amethystinus HYB SE? No Yes Yes<br />
= Aster ericoides x Aster novae-angliae / Synonym:<br />
Virgulus x amethystinus<br />
Canada milkvetch Astragalus canadensis G5 S4 rare rare No Yes Yes<br />
Cooper's milkvetch Astragalus neglectus G4 S3 rare rare rare No Yes Yes Synonym: Astragalus cooperi<br />
spearscale Atriplex patula G5 S5 No Yes Yes<br />
spear-leaved spearscale Atriplex prostrata G5 S5 No Yes Yes<br />
Synonyms: Atriplex hastata, Atriplex patula var. hastata<br />
yellow false foxglove Aureolaria flava G5 S3 rare rare rare No Yes Yes<br />
costmary Balsamita major G5 SE5 Yes Yes No<br />
Synonym: Chrysan<strong>the</strong>mum balsamita / Historic record -<br />
1936<br />
blue wild indigo Baptisia australis G5 SE1 Yes Yes Yes<br />
common winter-cress Barbarea vulgaris G? SE5 Yes Yes Yes<br />
English daisy Bellis perennis G? SE5 Yes Yes Yes<br />
hoary alyssum Berteroa incana G? SE5 Yes Yes Yes<br />
nodding beggar-ticks Bidens cernua G5 S5 No Yes Yes<br />
small beggar-ticks Bidens discoidea G5 S4 rare rare No Yes Yes<br />
devil's beggar-ticks Bidens frondosa G5 S5 No Yes Yes<br />
three-parted beggar-ticks Bidens tripartita G5 S5 rare No Yes Yes Synonym: Bidens connata<br />
tall beggar-ticks Bidens vulgata G5 S5 rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 5<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
false nettle Boehmeria cylindrica G5 S5 No Yes Yes<br />
indian mustard Brassica juncea G? SE5 Yes Yes Yes<br />
black mustard Brassica nigra G? SE5 Yes Yes Yes<br />
wild turnip Brassica rapa G? SE5 Yes Yes Yes<br />
flowering-rush Butomus umbellatus G5 SE5 Yes Yes Yes<br />
sea rocket Cakile edentula G5 S4 rare rare No Yes Yes<br />
catnip-thyme Calamintha nepeta NR NR Yes Yes Yes<br />
grass pink Calopogon tuberosus G5 S4S5 rare rare No Yes No Historic record - 1940<br />
marsh-marigold Caltha palustris G5 S5 No Yes Yes<br />
hedge bindweed Calystegia sepium ssp. americanum G4G5 SU No Yes Yes Synonym: Convolvulus sepium<br />
low bindweed Calystegia spithamaea ssp. spithamaea G4G5 S4S5 rare rare No Yes Yes Synonym: Convolvulus spithamaeus<br />
small-seeded false flax Camelina microcarpa G? SE5 Yes Yes Yes<br />
marsh bellflower Campanula aparinoides G5 S5 rare rare No Yes Yes Synonym: Campanula uliginosa<br />
creeping bellflower Campanula rapunculoides G? SE5 Yes Yes Yes<br />
harebell Campanula rotundifolia G5 S5 rare rare No Yes Yes<br />
nettle-leaved bellflower Campanula trachelium G? SE1 Yes Yes Yes<br />
hemp Cannabis sativa G5 S1 Yes Yes Yes<br />
shepherd's-purse Capsella bursa-pastoris G? SE5 Yes Yes Yes<br />
bulbous cress Cardamine bulbosa G5 S4 rare rare No Yes Yes Historic record - 1927<br />
cut-leaved toothwort Cardamine concatenata G5 S5 No Yes Yes Synonym: Dentaria laciniata<br />
common toothwort Cardamine diphylla G5 S5 No Yes Yes Synonym: Dentaria diphylla<br />
purple cress Cardamine douglassii G5 S4 No Yes Yes<br />
hairy cardamine Cardamine hirsuta G? SE3 Yes Yes Yes<br />
cardamine Cardamine impatiens G? SE1 Yes Yes Yes<br />
Pensylvania cardamine Cardamine pensylvanica G5 S5 No Yes Yes<br />
cuckoo-flower Cardamine pratensis ssp. pratensis G5T? SE1 rare rare Yes Yes Yes<br />
hybrid toothwort Cardamine x maxima HYB S2S3 No Yes Yes Synonym: Dentaria maxima<br />
plumeless thistle Carduus acanthoides G? SE5 Yes Yes Yes<br />
welted thistle Carduus crispus G? SE? Yes Yes Yes<br />
nodding thistle Carduus nutans ssp. nutans G? SE5 Yes Yes Yes<br />
sedge Carex albursina G5 S5 rare No Yes Yes<br />
common caraway Carum carvi G? SE1? Yes Yes Yes<br />
giant blue cohosh Caulophyllum giganteum G? S5 rare rare No Yes Yes Synonym: Caulophyllum thalictroides var. giganteum<br />
blue cohosh Caulophyllum thalictroides G? S5 No Yes Yes<br />
cornflower Centaurea cyanus G? SE1 Yes Yes Yes<br />
spotted knapweed Centaurea maculosa G? SE5 Yes Yes Yes<br />
black knapweed Centaurea nigra G? SE? Yes Yes Yes<br />
scabious knapweed Centaurea scabiosa G? SE1 Yes Yes No Historic record - 1907<br />
branched centaury Centaurium pulchellum G? SE3 Yes Yes Yes<br />
field chickweed Cerastium arvense ssp. arvense G5T? SE4 Yes Yes Yes<br />
mouse-eared chickweed Cerastium fontanum G? SE5 Yes Yes Yes Synonym: Cerastium vulgatum<br />
dwarf chickweed Cerastium pumilum G? SE2 Yes Yes Yes<br />
small chickweed Cerastium semidecandrum G? SE5 Yes Yes Yes<br />
snow-in-summer Cerastium tomentosum G? SE2 Yes Yes Yes<br />
dwarf snapdragon Chaenorrhinum minus G? SE5 Yes Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 6<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
ridge-seeded spurge Chamaesyce glyptosperma G5 SE5 Yes Yes Yes Synonym: Euphorbia glyptosperma<br />
spotted spurge Chamaesyce maculata G5? SE5 Yes Yes Yes Synonym: Euphorbia maculata<br />
nodding spurge Chamaesyce nutans G? S4S5 No Yes Yes Synonym: Euphorbia nutans<br />
hairy spurge Chamaesyce vermiculata G5 S5 No Yes Yes Synonym: Euphorbia vermiculata<br />
celandine Chelidonium majus G? SE5 Yes Yes Yes<br />
turtlehead Chelone glabra G5 S5 No Yes Yes<br />
lamb's-quarters Chenopodium album var. album G5 SE5 Yes Yes Yes<br />
good King Henry Chenopodium bonus-henricus G? SE1 Yes Yes No Historic record - 1900<br />
oak goosefoot Chenopodium botrys G? SE4 Yes Yes No Historic record - 1907<br />
strawberry-blite Chenopodium capitatum G5 S5 rare rare No Yes Yes<br />
oak-leaved goosefoot Chenopodium glaucum ssp. glaucum G5T? SE5 Yes Yes Yes<br />
many-seeded goosefoot Chenopodium polyspermum G? SE1 Yes Yes Yes<br />
maple-leaved goosefoot Chenopodium simplex G5 S5 No Yes Yes Synonym: Chenopodium hybridum<br />
ox-eye daisy Chrysan<strong>the</strong>mum leucan<strong>the</strong>mum G? SE5 Yes Yes Yes Synonym: Leucan<strong>the</strong>mum vulgare<br />
golden saxifrage Chrysosplenium americanum G5 S5 rare rare No Yes Yes<br />
chicory Cichorium intybus G? SE5 Yes Yes Yes<br />
bulblet water-hemlock Cicuta bulbifera G5 S5 No Yes Yes<br />
spotted water-hemlock Cicuta maculata G5 S5 No Yes Yes<br />
small enchanter's nightshade Circaea alpina G5 S5 No Yes Yes<br />
enchanter's nightshade Circaea lutetiana ssp. canadensis G5 S5 No Yes Yes Synonym: Circaea quadrisulcata<br />
Canada thistle Cirsium arvense G? SE5 Yes Yes Yes<br />
swamp thistle Cirsium muticum G5 S5 rare rare No Yes Yes<br />
bull thistle Cirsium vulgare G5 SE5 Yes Yes Yes<br />
Carolina spring beauty Claytonia caroliniana G5 S5 rare No Yes Yes<br />
Virginia spring beauty Claytonia virginica G5 S5 No Yes Yes<br />
wild basil Clinopodium vulgare G? S5 No Yes Yes Synonym: Satureja vulgaris<br />
bluebead lily Clintonia borealis G5 S5 No Yes Yes<br />
horsebalm Collinsonia canadensis G5 S4 rare rare No Yes Yes<br />
bastard toad-flax Comandra umbellata G5 S5 rare rare No Yes Yes Synonym: Comandra richardsiana<br />
Asiatic day-flower Commelina communis G5 SE3 Yes Yes Yes<br />
poison hemlock Conium maculatum G5 SE2? Yes Yes Yes<br />
squawroot Conopholis americana G5 S4? rare rare No Yes Yes<br />
hare's-ear mustard Conringia orientalis G? SE2 Yes Yes No Historic record - 1900<br />
rocket larkspur Consolida ajacis G? SE1 Yes Yes Yes Synonym: Consolida ambigua / Historic record - 1916<br />
lily-<strong>of</strong>-<strong>the</strong>-valley Convallaria majalis G5 SE5 Yes Yes Yes<br />
field bindweed Convolvulus arvensis G? SE5 Yes Yes Yes<br />
horseweed Conyza canadensis G5 S5 No Yes Yes Synonym: Erigeron canadensis<br />
goldthread Coptis trifolia G5 S5 No Yes Yes Synonym: Coptis groenlandica<br />
spotted coralroot Corallorhiza maculata G5 S5 rare rare No Yes Yes<br />
striped coralroot Corallorhiza striata G5 S4 rare rare No Yes Yes Historic record - 1947<br />
early coralroot Corallorhiza trifida G5 S5 rare rare No Yes Yes<br />
large-flowered tickseed Coreopsis grandiflora G5 SE3? Yes Yes Yes<br />
crown vetch Coronilla varia G? SE5 Yes Yes Yes<br />
golden corydalis Corydalis aurea ssp. aurea G5 S5 rare rare No Yes No Historic record - 1908<br />
narrow-leaved hawk's-beard Crepis tectorum G? SE5 Yes Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 7<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
honewort Cryptotaenia canadensis G5 S5 No Yes Yes<br />
clover dodder Cuscuta epithymum G? SEH Yes Yes No Historic record - 1903<br />
common dodder Cuscuta gronovii G5 S5 rare No Yes Yes<br />
winged pigweed Cycloloma atriplicifolium G5 S4 No Yes Yes<br />
Kenilworth-ivy Cymbalaria muralis G? SE1 Yes Yes Yes<br />
swallow-wort Cynanchum rossicum G? SE5 Yes Yes Yes Synonym: Vincetoxicum rossicum<br />
wild comfrey Cynoglossum boreale G4Q S4 rare rare No Yes No Historic record - 1890<br />
hound's-tongue Cynoglossum <strong>of</strong>ficinale G? SE5 Yes Yes Yes<br />
moccasin flower Cypripedium acaule G5 S5 rare rare No Yes Yes<br />
yellow lady's-slipper Cypripedium calceolus var. pubescens G5T? S5 rare No Yes Yes<br />
yellow lady's-slipper Cypripedium calceolus var. parviflorum G5T? S5 rare No Yes No<br />
showy lady's-slipper Cypripedium reginae G4 S4 rare rare No Yes Yes<br />
dewdrop Dalibarda repens G5 S4S5 rare rare No Yes Yes<br />
jimsonweed Datura stramonium GU SE5 Yes Yes Yes<br />
wild carrot Daucus carota G? SE5 Yes Yes Yes<br />
flixweed Descurainia sophia G? SE5 Yes Yes Yes<br />
Canadian tick-trefoil Desmodium canadense G5 S4 rare No Yes Yes<br />
pointed-leaved tick-trefoil Desmodium glutinosum G5 S4 rare No Yes Yes<br />
naked-flowered tick-trefoil Desmodium nudiflorum G5 S4 rare rare No Yes Yes<br />
Deptford pink Dianthus armeria G? SE5 Yes Yes Yes<br />
bearded pink Dianthus barbatus G? SE1 Yes Yes Yes<br />
maiden pink Dianthus deltoides G? SE2 Yes Yes Yes<br />
cottage pink Dianthus plumarius G? SE1 Yes Yes Yes<br />
squirrel-corn Dicentra canadensis G5 S5 No Yes Yes<br />
Dutchman's-breeches Dicentra cucullaria G5 S5 rare No Yes Yes<br />
slender wall-rocket Diplotaxis tenuifolia G? SE5 Yes Yes Yes<br />
teasel Dipsacus fullonum ssp. sylvestris G? SE5 Yes Yes Yes Synonym: Dipsacus sylvestris<br />
spatulate-leaved sundew Drosera intermedia G5 S5 rare rare No Yes No Historic record - 1907<br />
round-leaved sundew Drosera rotundifolia G5 S5 rare rare No Yes Yes<br />
wild cucumber Echinocystis lobata G5 S5 No Yes Yes<br />
globe thistle Echinops sphaerocephalus G? SE4 Yes Yes Yes<br />
viper's bugloss Echium vulgare G? SE5 Yes Yes Yes<br />
beech-drops Epifagus virginiana G5 S5 No Yes Yes<br />
fireweed Epilobium angustifolium G5 S5 No Yes Yes<br />
sticky willowherb Epilobium ciliatum ssp. ciliatum G5 S5 No Yes Yes Synonyms: Epilobium glandulosum, Epilobium watsonii<br />
purple-leaved willowherb Epilobium coloratum G5 S5 rare rare No Yes Yes<br />
hairy willowherb Epilobium hirsutum G? SE5 Yes Yes Yes<br />
narrow-leaved willowherb Epilobium leptophyllum G5 S5 rare No Yes Yes<br />
small-flowered willowherb Epilobium parviflorum G? SE4 Yes Yes Yes<br />
helleborine Epipactis helleborine G? SE5 Yes Yes Yes<br />
American fireweed Erechtites hieracifolia G5 S5 rare rare No Yes Yes<br />
harbinger-<strong>of</strong>-spring Erigenia bulbosa G5 S3 rare rare rare No Yes No<br />
daisy fleabane Erigeron annuus G5 S5 No Yes Yes<br />
Philadelphia fleabane Erigeron philadelphicus ssp. philadelphicus G5T5 S5 No Yes Yes<br />
Robin's plantain Erigeron pulchellus G5 S5 rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 8<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
rough fleabane Erigeron strigosus G5 S5 No Yes Yes Synonym: Erigeron annuus ssp. strigosus<br />
stork's-bill Erodium cicutarium ssp. cicutarium G4G5 SE3 Yes Yes Yes<br />
spring whitlow-grass Erophila verna G? SE4 Yes Yes Yes Synonym: Draba verna<br />
dog mustard Erucastrum gallicum G5 SE5 Yes Yes Yes<br />
flat-topped eryngo Eryngium planum G? SE1 Yes Yes Yes<br />
wormseed mustard Erysimum cheiranthoides ssp. cheiranthoides NR SE5 Yes Yes Yes<br />
tall wormseed mustard Erysimum hieraciifolium G? SE5 Yes Yes Yes<br />
small-flowered prairie rocket Erysimum inconspicuum G4G5 S4 Yes Yes Yes<br />
white trout-lily Erythronium albidum G5 S4 rare rare No Yes Yes<br />
yellow trout-lily Erythronium americanum ssp. americanum G5 S5 No Yes Yes<br />
spotted joe-pye weed Eupatorium maculatum ssp. maculata G5 S5 No Yes Yes<br />
boneset Eupatorium perfoliatum G5 S5 No Yes Yes<br />
white snakeroot Eupatorium rugosum G5 S5 No Yes Yes<br />
cypress spurge Euphorbia cyparissias G5 SE5 Yes Yes Yes<br />
too<strong>the</strong>d spurge Euphorbia dentata G5 SE4 Yes Yes Yes<br />
thyme-leaved spurge Euphorbia epithymoides G? SE1 Yes Yes Yes<br />
leafy spurge Euphorbia esula G5 SE5 Yes Yes Yes<br />
sun spurge Euphorbia helioscopia G5 SE3 Yes Yes Yes<br />
snow-on-<strong>the</strong>-mountain spurge Euphorbia marginata G5 SE2 Yes Yes Yes<br />
broad-leaved spurge Euphorbia platyphyllos G? SE4 Yes Yes Yes<br />
grass-leaved goldenrod Euthamia graminifolia G5 S5 No Yes Yes Synonym: Solidago graminifolia<br />
buckwheat Fagopyrum esculentum G? SE3 Yes Yes Yes Synonym: Fagopyrum sagittatum<br />
queen-<strong>of</strong>-<strong>the</strong>-prairie Filipendula rubra G4G5 SE1 Yes Yes Yes<br />
queen-<strong>of</strong>-<strong>the</strong>-meadow Filipendula ulmaria ssp. ulmaria G5 SE1 Yes Yes Yes<br />
woodland strawberry Fragaria vesca ssp. americana G5 S5 No Yes Yes<br />
common strawberry Fragaria virginiana ssp. virginiana G5 SU No Yes Yes<br />
common fumitory Fumaria <strong>of</strong>ficinalis G5 SE3 No Yes No Historic record - 1907<br />
snowdrop Galanthus nivalis G? SE1 Yes Yes Yes<br />
showy orchis Galearis spectabilis G5 S4 rare rare No Yes No Synonym: Orchis spectabilis / Historic record - 1911<br />
common hemp-nettle Galeopsis tetrahit G? SE5 Yes Yes Yes<br />
small-flowered galinsoga Galinsoga parviflora G? SE? Yes Yes Yes<br />
hairy galinsoga Galinsoga quadriradiata G? SE5 Yes Yes Yes Synonym: Galinsoga ciliata<br />
cleavers Galium aparine G5 S5 rare No Yes Yes<br />
rough bedstraw Galium asprellum G5 S5 No Yes Yes<br />
nor<strong>the</strong>rn bedstraw Galium boreale G5 S5 rare rare No Yes Yes<br />
wild licorice Galium circaezans G5 S5 rare rare No Yes Yes<br />
Labrador bedstraw Galium labradoricum G5 S5 rare rare No Yes Yes<br />
lance-leaved wild licorice Galium lanceolatum G5 S5 rare rare No Yes Yes<br />
white bedstraw Galium mollugo Yes Yes No<br />
obtuse bedstraw Galium obtusum G5 S4S5 No Yes Yes<br />
marsh bedstraw Galium palustre G5 S5 No Yes Yes<br />
lesser bedstraw Galium tinctorium G5 S5 rare rare No Yes Yes<br />
small bedstraw Galium trifidum ssp. trifidum G5 S5 rare No Yes Yes Synonym: Galium brandegei<br />
sweet-scented bedstraw Galium triflorum G5 S5 No Yes Yes<br />
yellow bedstraw Galium verum G? SE5 Yes Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 9<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
purple-stemmed gentian Gentiana rubricaulis G4? S4 rare rare No Yes Yes<br />
fringed gentian Gentianopsis crinita NR S5 rare rare No Yes Yes Synonyms: Gentiana crinita, Gentianella crinita<br />
spotted crane's-bill Geranium maculatum G5 S5 No Yes Yes<br />
herb-robert Geranium robertianum G? SE5 Yes Yes Yes<br />
yellow avens Geum aleppicum G5 S5 No Yes Yes Synonym: Geum strictum<br />
white avens Geum canadense G5 S5 No Yes Yes<br />
rough avens Geum laciniatum G5 S4 No Yes Yes<br />
water avens Geum rivale G5 S5 rare rare No Yes Yes<br />
wood avens Geum urbanum G5 SE2 Yes Yes Yes<br />
ground-ivy Glechoma hederacea G? SE5 No Yes Yes<br />
fragrant cudweed Gnaphalium obtusifolium G5 S5 No Yes Yes<br />
low cudweed Gnaphalium uliginosum G5 SE5 Yes Yes Yes<br />
viscid cudweed Gnaphalium viscosum G5 S5 rare rare No Yes No Synonym: Gnaphalium macounii<br />
downy rattlesnake-plantain Goodyera pubescens G5 S4 rare rare No Yes No<br />
dwarf rattlesnake-plantain Goodyera repens G5 S5 rare rare No Yes Yes Historic record - 1889<br />
clammy hedge-hyssop Gratiola neglecta G5 S4 rare rare No Yes No Historic record - 1907<br />
gumweed Grindelia squarrosa G5 SE? Yes Yes Yes<br />
baby's-breath Gypsophila paniculata G? SE3 Yes Yes Yes<br />
spurred stickseed Hackelia deflexa G5 S5 rare rare No Yes Yes Synonym: Hackelia americana<br />
Virginia stickseed Hackelia virginiana G5 S5 No Yes Yes<br />
spurred gentian Halenia deflexa ssp. deflexa G5 S5 rare rare No Yes Yes<br />
rough pennyroyal Hedeoma hispidum G5 S4 rare rare No Yes No<br />
pennyroyal Hedeoma pulegioides G5 S4 rare rare No Yes Yes<br />
bluets Hedyotis caerulea G5 S1 rare rare rare No Yes No Synonym: Houstonia caerula / Historic record - 1930<br />
Venus'-pride Hedyotis longifolia G4G5 S4? rare rare No Yes No<br />
Synonyms: Hedyotis ciliolata, Houstonia canadensis,<br />
Houstonia longifolia<br />
Bicknell's frostweed Helian<strong>the</strong>mum bicknellii G5 S4 rare rare No Yes Yes<br />
Canada frostweed Helian<strong>the</strong>mum canadense G5 S4 rare rare No Yes Yes<br />
common sunflower Helianthus annuus ssp. annuus G5 SE? Yes Yes Yes<br />
thin-leaved sunflower Helianthus decapetalus G5 S5 rare rare No Yes Yes<br />
rough woodland sunflower Helianthus divaricatus G5 S5 No Yes Yes<br />
tall wild sunflower Helianthus giganteus G5 S5 No Yes No Historic record - 1907<br />
prairie sunflower Helianthus rigidus ssp. subrhomboideus G5 S? Yes Yes Yes Synonyms: Helianthus laetiflorus <strong>of</strong> PCF, H. pauciflorus<br />
pale-leaved sunflower Helianthus strumosus G5 S5 rare rare No Yes Yes<br />
Jeruselam artichoke Helianthus tuberosus G5 SE3 Yes Yes Yes<br />
orange day-lily Hemerocallis fulva G? SE5 Yes Yes Yes<br />
yellow day-lily Hemerocallis lilioasphodelus G? SE3 Yes Yes Yes<br />
cow parsnip Heracleum lanatum G5 S5 rare rare No Yes Yes Synonym: Heracleum maximum<br />
dame's rocket Hesperis matronalis G4G5 SE5 Yes Yes Yes<br />
flower-<strong>of</strong>-an-hour Hibiscus trionum G? SE4 Yes Yes No Historic record - 1900<br />
orange hawkweed Hieracium aurantiacum G? SE3 Yes Yes Yes<br />
field hawkweed Hieracium caespitosum ssp. caespitosum NR SE5 Yes Yes Yes Synonym: Hieracium pratense<br />
Canada hawkweed Hieracium canadense G5 SU rare rare No Yes No Historic record - 1889<br />
common hawkweed Hieracium lachenalii G? SE2? Yes Yes Yes Synonym: Hieracium vulgatum<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 10<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
mouse-ear hawkweed Hieracium pilosella G? SE5 Yes Yes Yes<br />
glaucous king devil Hieracium piloselloides G? SE5 Yes Yes Yes Synonym: Hieracium florentinum<br />
tall king devil Hieracium praealtum G? SE1 Yes Yes No Historic record - 1909<br />
rough hawkweed Hieracium scabrum G5 S4 rare rare No Yes No Historic record - 1889<br />
king devil hawkweed Hieracium x floribundum HYB SE? Yes Yes Yes = Hieracium caespitosum x Hieracium lactucella<br />
jagged chickweed Holosteum umbellatum G? SE2 Yes Yes Yes<br />
green violet Hybanthus concolor G5 S2 rare rare rare No Yes No Synonym: Cubelium concolor<br />
marsh pennywort Hydrocotyle americana G5 S5 No Yes Yes<br />
Canada waterleaf Hydrophyllum canadense G5 S4 rare rare No Yes Yes<br />
Virginia waterleaf Hydrophyllum virginianum G5 S5 No Yes Yes<br />
large St. John's-wort Hypericum majus G5 S5 rare rare No Yes Yes<br />
common St. John's-wort Hypericum perforatum G? SE5 Yes Yes Yes<br />
spotted St. John's-wort Hypericum punctatum G5 S5 rare rare No Yes Yes<br />
hyssop Hyssopus <strong>of</strong>ficinalis G? SE2 Yes Yes No Historic record - 1912<br />
spotted jewelweed Impatiens capensis G5 S5 No Yes Yes Synonym: Impatiens biflora<br />
Asian jewelweed Impatiens glandulifera G? SE4 Yes Yes Yes<br />
pale jewelweed Impatiens pallida G5 S5 rare No Yes Yes<br />
English inula Inula britannica G? SE1 Yes Yes Yes<br />
elecampane Inula helenium G? SE5 Yes Yes Yes<br />
fleur-de-lis Iris germanica G? SE1 Yes Yes Yes<br />
yellow flag Iris pseudacorus G? SE3 Yes Yes Yes<br />
blue flag Iris versicolor G5 S5 No Yes Yes<br />
twinleaf Jeffersonia diphylla G5 S4 rare rare No Yes Yes<br />
canker-root Kickxia elatine G? SE1 Yes Yes Yes<br />
summer cypress Kochia scoparia G? SE5 Yes Yes Yes<br />
tall blue lettuce Lactuca biennis G5 S5 rare rare No Yes Yes<br />
Canada lettuce Lactuca canadensis G5 S5 No Yes Yes<br />
willow-leaved lettuce Lactuca saligna G? SE1 Yes Yes Yes<br />
prickly lettuce Lactuca serriola G? SE5 Yes Yes Yes Synonym: Lactuca scariola<br />
henbit Lamium amplexicaule G? SE3 Yes Yes Yes<br />
wood nettle Laportea canadensis G5 S5 No Yes Yes<br />
bluebur Lappula squarrosa ssp. squarrosa NR S5 Yes Yes Yes Synonym: Lappula echinata<br />
nipplewort Lapsana communis G? SE5 Yes Yes Yes<br />
everlasting pea Lathyrus latifolius G? SE4 Yes Yes Yes<br />
marsh vetchling Lathyrus palustris G5 S5 rare rare No Yes Yes<br />
yellow vetchling Lathyrus pratensis G? SE2 Yes Yes Yes<br />
tuberous vetchling Lathyrus tuberosus G? SE3 Yes Yes Yes<br />
pinweed Lechea intermedia G5 S4 rare rare No Yes Yes<br />
rough hawkbit Leontodon taraxacoides ssp. taraxacoides NR SE1 Yes Yes Yes<br />
mo<strong>the</strong>rwort Leonurus cardiaca ssp. cardiaca G? SE5 Yes Yes Yes<br />
field cress Lepidium campestre G5 SE5 Yes Yes Yes<br />
common pepper-grass Lepidium densiflorum G? SE5 No Yes Yes Native status is uncertain<br />
narrow-leaved pepper-grass Lepidium ruderale G? SE3 Yes Yes Yes<br />
garden cress Lepidium sativum G? SE2 Yes Yes No Historic record - 1910<br />
poor-man's pepper-grass Lepidium virginicum G5 S5 rare rare No Yes No Historic record - 1892<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 11<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
round-headed bush-clover Lespedeza capitata G5 S4 rare rare No Yes Yes<br />
hairy bush-clover Lespedeza hirta G5 S4 rare rare No Yes Yes<br />
wand-like bush-clover Lespedeza intermedia G5 S4 rare rare No Yes Yes Historic record - 1890<br />
lovage Levisticum <strong>of</strong>ficinale G? SE1 Yes Yes Yes<br />
tiger lily Lilium lancifolium G? SE1 Yes Yes Yes Synonym: Lilium tigrinum<br />
Canada lily Lilium michiganense G5 S5 No Yes Yes<br />
Synonyms: Lilium canadense ssp. michiganense, Lilium<br />
canadense var. umbelliferum<br />
Dalmatian toadflax Linaria genistifolia ssp. dalmatica G5T3 SE3 Yes Yes Yes Synonym: Linaria dalmatica<br />
butter-and-eggs Linaria vulgaris G? SE5 Yes Yes Yes<br />
false pimpernel Lindernia dubia var. dubia G5 S4 rare rare No Yes Yes<br />
perennial flax Linum perenne G? SE3 Yes Yes Yes<br />
common flax Linum usitatissimum G? SE3 Yes Yes Yes<br />
Loesel's twayblade Liparis loeselii G5 S4S5 rare No Yes Yes<br />
heart-leaved twayblade Listera cordata G5 S5? rare rare No No Yes<br />
common gromwell Lithospermum <strong>of</strong>ficinale G? SE5 Yes Yes Yes<br />
cardinal flower Lobelia cardinalis G5 S5 rare rare No Yes Yes<br />
indian-tobacco Lobelia inflata G5 S5 No Yes Yes<br />
Kalm's lobelia Lobelia kalmii G5 S5 rare rare No Yes Yes<br />
great lobelia Lobelia siphilitica G5 S5 No Yes Yes<br />
bird's-foot trefoil Lotus corniculatus G? SE5 Yes Yes Yes<br />
marsh purslane Ludwigia palustris G5 S5 rare rare No Yes Yes<br />
honesty Lunaria annua G? SE2 Yes Yes Yes<br />
wild lupine Lupinus perennis ssp. perennis G5 S3 rare rare rare No Yes Yes<br />
rose campion Lychnis coronaria G? SE3 Yes Yes Yes<br />
matrimony vine Lycium barbarum G? SE2 Yes Yes Yes Synonym: Lycium halimifolium<br />
tomato Lycopersicon esculentum G? SE2 Yes Yes Yes<br />
American water-horehound Lycopus americanus G5 S5 No Yes Yes<br />
European water-horehound Lycopus europaeus G? SE5 Yes Yes Yes<br />
nor<strong>the</strong>rn water-horehound Lycopus uniflorus G5 S5 No Yes Yes<br />
fringed loosestrife Lysimachia ciliata G5 S5 No Yes Yes Synonym: Steironema ciliatum<br />
moneywort Lysimachia nummularia G? SE5 Yes Yes Yes<br />
spotted loosestrife Lysimachia punctata G? SE3 Yes Yes Yes<br />
whorled loosestrife Lysimachia quadrifolia G5 S4 rare rare No Yes Yes<br />
swamp-candles Lysimachia terrestris G5 S5 rare rare No Yes Yes<br />
tufted loosestrife Lysimachia thrysiflora G5 S5 rare No Yes Yes<br />
garden loosestrife Lysimachia vulgaris G? SE3 Yes Yes Yes<br />
purple loosestrife Lythrum salicaria G5 SE5 Yes Yes Yes<br />
osage-orange Maclura pomifera GU SE2 Yes Yes Yes<br />
Canada mayflower Maian<strong>the</strong>mum canadense G5 S5 No Yes Yes<br />
false Solomon's-seal Maian<strong>the</strong>mum racemosum ssp. racemosum G5 S5 No Yes Yes Synonym: Smilacina racemosa<br />
starry false Solomon's-seal Maian<strong>the</strong>mum stellatum G5 S5 No Yes Yes Synonym: Smilacina stellata<br />
three-leaved false Solomon's-seal Maian<strong>the</strong>mum trifolium G5 S5 rare No Yes Yes Synonym: Smilacina trifolia<br />
white adder's-mouth Malaxis monophyllos ssp. brachypoda G4T4 S4 rare rare No Yes Yes Synonym: Malaxis brachypoda<br />
European mallow Malva alcea G? SE1 Yes Yes Yes<br />
musk mallow Malva moschata G? SE5 Yes Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 12<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
common mallow Malva neglecta G? SE5 Yes Yes Yes Synonym: Malva rotundifolia (misapplied)<br />
round-leaved mallow Malva rotundifolia G? SE2 Yes Yes Yes Synonym: Malva pusilla<br />
high mallow Malva sylvestris G? SE1 Yes Yes No Historic record - 1897<br />
whorled mallow Malva verticillata G? SE1 Yes Yes No Historic record - 1897<br />
common horehound Marrubium vulgare G? SE2 Yes Yes No Historic record - 1889<br />
pineapple-weed Matricaria matricarioides G5 SE5 Yes Yes Yes<br />
Synonyms: Chamomilla suaveolens, Matricaria suaveolens<br />
<strong>of</strong> PCF<br />
scentless chamomille Matricaria perforata G? SE? Yes Yes Yes<br />
false chamomille Matricaria recutita G? SE? Yes Yes Yes<br />
Synonyms: Chamomilla suaveolens <strong>of</strong> PCF, Matricaria<br />
chamomilla, Matricaria suaveolens<br />
indian cucumber-root Medeola virginiana G5 S5 rare No Yes Yes<br />
black medick Medicago lupulina G? SE5 Yes Yes Yes<br />
alfalfa Medicago sativa ssp. falcata G? Yes Yes Yes<br />
alfalfa Medicago sativa ssp. sativa G? SE5 Yes Yes Yes<br />
cow-wheat Melampyrum lineare G5 S4S5 rare rare No Yes Yes<br />
white sweet clover Melilotus alba G? SE5 Yes Yes Yes<br />
yellow sweet clover Melilotus <strong>of</strong>ficinalis G? SE5 Yes Yes Yes<br />
field mint Mentha arvensis NR S5 No Yes Yes<br />
spearmint Mentha spicata G? SE4 Yes Yes Yes<br />
red mint Mentha x gentilis HYB SE2 Yes Yes Yes<br />
= Mentha arvensis x Mentha spicata / Synonym: Mentha x<br />
cardiaca<br />
peppermint Mentha x piperita HYB SE4 Yes Yes Yes<br />
= Mentha aquatica x Mentha spicata / Synonym: Mentha x<br />
citrata<br />
buckbean Menyan<strong>the</strong>s trifoliata G5 S5 rare rare No Yes Yes<br />
yellow monkey-flower Mimulus ringens G5 S5 No Yes Yes<br />
hairy four-o'clock Mirabilis hirsuta G5 SE1 Yes Yes No<br />
wild four-o'clock Mirabilis nyctaginea G5 S4 Yes Yes Yes<br />
bishop's-cap Mitella diphylla G5 S5 No Yes Yes<br />
naked mitrewort Mitella nuda G5 S5 No Yes Yes<br />
carpetweed Mollugo verticillata G? SE5 Yes Yes Yes<br />
Oswego-tea Monarda didyma G5 S3 rare rare rare No Yes No<br />
wild bergamot Monarda fistulosa G5 S5 No Yes Yes<br />
one-flowered pyrola Moneses uniflora G5 S5 rare rare No Yes Yes<br />
pinesap Monotropa hypopithys G5 S4 rare rare No Yes Yes Synonym: Hypopithys monotropa<br />
indian-pipe Monotropa uniflora G5 S5 No Yes Yes<br />
grape hyacinth Muscari botryoides G? SE3 Yes Yes Yes<br />
small forget-me-not Myosotis laxa G5 S5 No Yes Yes<br />
garden forget-me-not Myosotis scorpioides G5 SE5 Yes Yes Yes<br />
upright forget-me-not Myosotis stricta G? SE4 Yes Yes Yes<br />
woodland forget-me-not Myosotis sylvatica G5 SE4 Yes Yes Yes<br />
catnip Nepeta cataria G? SE5 Yes Yes Yes<br />
yellow ball mustard Neslia paniculata G? SE3 Yes Yes No Historic record - 1918<br />
apple-<strong>of</strong>-Peru Nicandra physalodes G? SE1 Yes Yes Yes<br />
long-flowered tobacco Nicotiana longiflora G? SE1 Yes Yes Yes<br />
love-in-a-mist Nigella damascena G? SE1 Yes Yes No Historic record - 1897<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 13<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
yellow evening-primrose Oeno<strong>the</strong>ra biennis G5 S5 No Yes Yes<br />
evening-primrose Oeno<strong>the</strong>ra clelandii G3G5 S1 rare rare rare No Yes Yes<br />
yellow evening-primrose Oeno<strong>the</strong>ra parviflora G? S5? No Yes Yes<br />
sundrops Oeno<strong>the</strong>ra perennis G5 S4S5 rare rare No Yes No Historic record - 1918<br />
sainfoin Onobrychis viciifolia G? SE1 Yes Yes Yes Historic record - 1891<br />
Scotch thistle Onopordum acanthium G? SE4 Yes Yes Yes<br />
hairy false gromwell Onosmodium molle ssp. hispidissumum G4? S2 rare rare rare No Yes No<br />
Synonym: Onosmodium hispidissimum / Historic record -<br />
1890<br />
summer snowflake Ornithogalum umbellatum G2? SE3 Yes Yes Yes<br />
one-flowered cancer-root Orobanche uniflora G5 S4 rare rare No Yes Yes<br />
one-sided pyrola Orthilia secunda G5 S5 rare rare No Yes Yes Synonym: Pyrola secunda<br />
sweet cicely Osmorhiza claytonii G5 S5 No Yes Yes Synonym: Osmorhiza brevistylis<br />
anise-root Osmorhiza longistylis G5 S5 rare rare No Yes Yes<br />
wood sorrel Oxalis acetosella ssp. montana G5T? S5 rare rare No Yes Yes Synonym: Oxalis montana<br />
creeping wood sorrel Oxalis corniculata G? SE1 Yes Yes Yes<br />
yellow wood sorrel Oxalis dillenii G5 S5? No Yes Yes Synonym: Oxalis stricta (misapplied)<br />
European wood sorrel Oxalis stricta G5 S5 No Yes Yes Synonyms: Oxalis europaea, Oxalis fontana<br />
ginseng Panax quinquefolius G4 S3 endangered rare rare rare No Yes Yes<br />
dwarf ginseng Panax trifolius G5 S4 rare rare No Yes Yes<br />
long-headed poppy Papaver dubium G? SE1 Yes Yes No<br />
common poppy Papaver somniferum G? SE1 Yes Yes Yes<br />
pellitory Parietaria pensylvanica G5 S4 rare rare No Yes Yes<br />
large grass-<strong>of</strong>-Parnassus Parnassia glauca G5 S5 rare rare No Yes Yes<br />
small grass-<strong>of</strong>-Parnassus Parnassia parviflora G4 S4? rare rare No Yes No<br />
parsnip Pastinaca sativa G? SE5 Yes Yes Yes<br />
Canada lousewort Pedicularis canadensis G5 S5 rare rare No Yes Yes<br />
foxglove beard-tongue Penstemon digitalis G5 S4S5 rare rare No Yes Yes<br />
hairy beard-tongue Penstemon hirsutus G4 S4 rare rare No Yes Yes<br />
ditch stonecrop Penthorum sedoides G5 S5 No Yes Yes<br />
grape-leaved sweet-colt's-foot Petasites frigidus G5 S5 rare rare No Yes Yes Synonym: Petasites palmatus<br />
wild blue phlox Phlox divaricata G5 S4 rare rare No Yes Yes<br />
garden phlox Phlox paniculata G5 SE2 Yes Yes Yes<br />
moss phlox Phlox subulata ssp. subulata G5T5 SE2 Yes Yes Yes<br />
lopseed Phryma leptostachya G5 S4S5 No Yes Yes<br />
Chinese lantern Physalis alkekengi G? SE2 Yes Yes Yes<br />
clammy ground-cherry Physalis heterophylla G5 S4 rare rare No Yes Yes Synonym: Physalis lanceolata<br />
smooth ground-cherry Physalis subglabrata G5 SU rare rare No Yes Yes Synonym: Physalis virginiana var. subglabrata<br />
Virginia ground-cherry Physalis virginiana G5 SU rare rare No Yes Yes Synonym: Physalis longifolia<br />
Virginia false dragonhead Physostegia virginiana ssp. virginiana G5 S4 rare Yes Yes Yes<br />
Although native elsewhere in <strong>the</strong> province, all Peel<br />
occurrences appear to be introductions.<br />
pokeweed Phytolacca americana G5 S4 rare rare Yes Yes No<br />
Historic record - 1918 / Although native elsewhere in <strong>the</strong><br />
province, <strong>the</strong> Peel occurrence is introduced.<br />
spring clearweed Pilea fontana G5 S4 rare rare No Yes Yes<br />
dwarf clearweed Pilea pumila G5 S5 No Yes Yes<br />
sand plantain Plantago arenaria G?Q S4? Yes Yes Yes Synonym: Plantago psyllium<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 14<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
narrow-leaved plantain Plantago lanceolata G5 SE5 Yes Yes Yes<br />
common plantain Plantago major G5 SE5 Yes Yes Yes<br />
hoary plantain Plantago media G5 SE3 Yes Yes Yes<br />
Rugel's plantain Plantago rugelii G5 S5 No Yes Yes<br />
club-spur orchid Platan<strong>the</strong>ra clavellata G5 S4S5 rare rare No Yes No Synonym: Habenaria clavellata / Historic record - 1907<br />
tall white bog orchid Platan<strong>the</strong>ra dilatata G5 S5 rare rare No Yes Yes Synonym: Habenaria dilatata / Historic record - 1947<br />
tubercled orchid Platan<strong>the</strong>ra flava var. herbiola G4 S3 rare rare rare No Yes No Synonym: Habenaria flava / Historical record - 1891<br />
nor<strong>the</strong>rn green orchid Platan<strong>the</strong>ra hyperborea G5 S5 No Yes Yes Synonym: Habenaria hyperborea<br />
ragged fringed orchid Platan<strong>the</strong>ra lacera G5 S4S5 rare rare No Yes No Synonym: Habenaria lacera / Historic record - 1910<br />
small nor<strong>the</strong>rn bog orchid Platan<strong>the</strong>ra obtusata G5 S5 rare rare No Yes Yes Synonym: Habenaria obtusata<br />
purple fringed orchid Platan<strong>the</strong>ra psycodes G5 S5 rare rare No Yes Yes Synonym: Habenaria psycodes<br />
may-apple Podophyllum peltatum G5 S5 No Yes Yes<br />
rose pogonia Pogonia ophioglossoides G5 S4S5 rare rare No Yes No Historic record - 1940<br />
clammyweed Polanisia dodecandra G5Q S4 rare rare No Yes Yes Historic record - 1903<br />
fringed polygala Polygala paucifolia G5 S5 No Yes Yes<br />
purple milkwort Polygala sanguinea G5 S4 rare rare No Yes Yes<br />
Seneca snakeroot Polygala senega G4G5 S4 rare rare No Yes Yes<br />
whorled milkwort Polygala verticillata G5 S4 rare rare No Yes Yes<br />
hairy Solomon's-seal Polygonatum pubescens G5 S5 No Yes Yes<br />
striate knotweed Polygonum achoreum G5 S5 No Yes Yes<br />
knotweed Polygonum arenastrum G5? SE5 Yes Yes Yes<br />
creeping knotweed Polygonum aviculare G? SE5 Yes Yes Yes Synonym: Polygonum monspeliensis<br />
fringed bindweed Polygonum cilinode G5 S5 rare rare No Yes Yes<br />
black bindweed Polygonum convolvulus G? SE5 Yes Yes Yes Synonym: Bilderdykia convolvulus<br />
Japanese knotweed Polygonum cuspidatum G? SE4 Yes Yes Yes Synonym: Reynoutria japonica<br />
Douglas' knotweed Polygonum douglasii G5 S4 rare rare No Yes Yes<br />
water-pepper Polygonum hydropiper G5 SE5 Yes Yes Yes<br />
mild water-pepper Polygonum hydropiperoides G5 S5 rare rare No Yes No<br />
pale smartweed Polygonum lapathifolium G5 S5 No Yes Yes<br />
prince's fea<strong>the</strong>r Polygonum orientale G? SE3 Yes Yes Yes<br />
pink knotweed Polygonum pensylvanicum G5 S5 rare rare No Yes Yes<br />
lady's-thumb Polygonum persicaria G? SE5 Yes Yes Yes<br />
dotted smartweed Polygonum punctatum G5 S5 rare rare No Yes Yes<br />
arrow-leaved tearthumb Polygonum sagittatum G5 S4 rare rare No Yes Yes<br />
climbling false buckwheat Polygonum scandens G5 S4S5 rare rare No Yes Yes<br />
jumpseed Polygonum virginianum G5 S4 rare rare No Yes Yes Synonym: Tovara virginiana<br />
garden purslane Portulaca oleracea G? SE5 Yes Yes Yes<br />
silverweed Potentilla anserina ssp. anserina NR S5 rare No Yes Yes<br />
silvery cinquefoil Potentilla argentea G? SE5 Yes Yes Yes<br />
hybrid cinquefoil Potentilla inclinata HYB SE4 Yes Yes Yes =? Potentilla argentea x Potentilla recta / Synonyms:<br />
Potentilla canescens, Potentilla x intermedia <strong>of</strong> ON reports<br />
rough cinquefoil Potentilla norvegica ssp. norvegica G5T? SEU Yes Yes Yes<br />
marsh cinquefoil Potentilla palustris G5 S5 rare No Yes Yes<br />
bushy cinquefoil Potentilla paradoxa G5 S3 rare rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 15<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
rough-fruited cinquefoil Potentilla recta G? SE5 Yes Yes Yes<br />
creeping cinquefoil Potentilla reptans G? SE2 Yes Yes Yes<br />
Canada cinquefoil Potentilla simplex G5 S5 No Yes Yes<br />
white-lettuce Prenan<strong>the</strong>s alba G5 S5 No Yes Yes<br />
tall white-lettuce Prenan<strong>the</strong>s altissima G5? S5 No Yes Yes<br />
American heal-all Prunella vulgaris ssp. lanceolatus G5T? S5 No Yes Yes<br />
lungwort Pulmonaria <strong>of</strong>ficinalis NR SE1 Yes Yes Yes<br />
pink pyrola Pyrola asarifolia G5 S5 No Yes Yes<br />
green pyrola Pyrola chlorantha G5 S4S5 rare rare No Yes Yes Synonym: Pyrola virens / Historic record - 1904<br />
shinleaf Pyrola elliptica G5 S5 No Yes Yes<br />
kidney-leaf buttercup Ranunculus abortivus G5 S5 No Yes Yes<br />
tall buttercup Ranunculus acris G5 SE5 Yes Yes Yes<br />
yellow water buttercup Ranunculus flabellaris G5 S4? rare rare No Yes Yes<br />
swamp buttercup Ranunculus hispidus var. caricetorum G5T5 S5 No Yes Yes Synonym: Ranunculus septentrionalis<br />
swamp buttercup Ranunculus hispidus var. hispidus G5T5 S3 rare rare rare No Yes Yes<br />
bristly crowfoot Ranunculus pensylvanicus G5 S5 rare rare No Yes Yes<br />
hooked buttercup Ranunculus recurvatus var. recurvatus G5 S5 No Yes Yes<br />
creeping spearwort Ranunculus repens G? SE5 Yes Yes Yes<br />
cursed crowfoot Ranunculus sceleratus var. sceleratus G5 S5 No Yes Yes<br />
prairie coneflower Ratibida columnifera G5 SE1 Yes Yes No Historic record - 1918<br />
rhubarb Rheum rhabarbarum G? SE2 Yes Yes Yes Synonym: Rheum rhaponticum<br />
clammy locust Robinia viscosa G3 SE2 Yes Yes Yes<br />
marsh yellow cress Rorippa palustris ssp. hispida G5 S5 No Yes Yes Synonym: Rorippa islandica <strong>of</strong> NA reports<br />
creeping yellow cress Rorippa sylvestris G5 SE5 Yes Yes Yes<br />
black-eyed susan Rudbeckia hirta G5 S5 No Yes Yes<br />
cut-leaved coneflower Rudbeckia laciniata G5 S5 No Yes Yes<br />
thin-leaved coneflower Rudbeckia triloba G4 SE4 Yes Yes Yes<br />
sheep sorrel Rumex acetosella ssp. acetosella G5 SEU Yes Yes Yes<br />
curled dock Rumex crispus G? SE5 Yes Yes Yes<br />
yard dock Rumex longifolius G? SE1 Yes Yes No Historic record - 1910<br />
bitter dock Rumex obtusifolius ssp. obtusifolius G5 SE5 Yes Yes Yes<br />
great water dock Rumex orbiculatus G5 S4S5 rare No Yes Yes<br />
willow-leaved dock Rumex triangulivalvis G5 S4 No Yes Yes Synonyms: Rumex mexicanus, Rumex salicifolius<br />
creeping pearlwort Sagina procumbens G5 SE4 Yes Yes Yes<br />
Russian thistle Salsola kali G? SE5 Yes Yes Yes<br />
Synonyms: Salsola pestifer, Salsola ru<strong>the</strong>nica, Salsola<br />
tragus<br />
wood sage Salvia nemorosa G? SE1 Yes Yes No Historic record - 1942<br />
bloodroot Sanguinaria canadensis G5 S5 No Yes Yes<br />
black snakeroot Sanicula marilandica G5 S5 No Yes Yes<br />
clustered snakeroot Sanicula odorata G5 S5 rare rare No Yes No Synonym: Sanicula gregaria / Historic record - 1929<br />
bouncing-bet Saponaria <strong>of</strong>ficinalis G? SE5 Yes Yes Yes<br />
pitcher-plant Sarracenia purpurea G5 S5 rare rare No Yes Yes<br />
summer thyme Satureja hortensis G? SE2 Yes Yes No Historic record - 1889<br />
early saxifrage Saxifraga virginiensis G5 S5 rare rare No Yes Yes<br />
scheuchzeria Scheuchzeria palustris G5 S4S5 rare rare No Yes No Historic record - 1901<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 16<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
squill Scilla siberica G? SE2 Yes Yes Yes<br />
annual knawel Scleranthus annuus G? SE5 Yes Yes No Historic record - 1920<br />
lance-leaved figwort Scrophularia lanceolata G5 S4 rare rare No Yes Yes<br />
carpenter's-square Scrophularia marilandica G5 S4 rare rare No Yes Yes<br />
hooded skullcap Scutellaria galericulata G5 S5 No Yes Yes Synonym: Scutellaria epilobiifolia<br />
mad-dog skullcap Scutellaria lateriflora G5 S5 No Yes Yes<br />
small skullcap Scutellaria parvula ssp. parvula G4 S4 rare rare No Yes Yes Historic record - 1902<br />
mossy stonecrop Sedum acre G? SE5 Yes Yes Yes<br />
white stonecrop Sedum album G? SE1 Yes Yes Yes<br />
Spanish stonecrop Sedum hispanicum G? SE1 Yes Yes Yes<br />
false stonecrop Sedum spurium G? SE1 Yes Yes Yes<br />
live-forever Sedum telephium ssp. fabaria G? SE2 Yes Yes Yes Synonym: Sedum purpureum<br />
golden ragwort Senecio aureus G5 S5 rare rare No Yes Yes<br />
sticky groundsel Senecio viscosus G? SE3 Yes Yes Yes<br />
common groundsel Senecio vulgaris G? SE5 Yes Yes Yes<br />
bur cucumber Sicyos angulatus G5 S5 rare rare No Yes Yes<br />
sleepy catchfly Silene antirrhina G5 S5 rare rare No Yes Yes<br />
forking catchfly Silene dichotoma G? SE1 Yes Yes No<br />
white campion Silene latifolia G? SE5 Yes Yes Yes Synonyms: Lychnis alba, Silene alba, Silene pratensis<br />
night-flowering catchfly Silene noctiflora G? SE5 Yes Yes Yes<br />
bladder campion Silene vulgaris G? SE5 Yes Yes Yes Synonym: Silene cucubalus<br />
milk thistle Silybum marianum G? SE1 Yes Yes No Historic record - 1913<br />
white mustard Sinapis alba G? SE2 Yes Yes No<br />
Synonyms: Brassica alba, Brassica hirta / Historic record -<br />
1902<br />
charlock Sinapis arvensis G? SE5 Yes Yes Yes Synonym: Brassica kaber<br />
tumble mustard Sisymbrium altissimum G? SE5 Yes Yes Yes<br />
hedge mustard Sisymbrium <strong>of</strong>ficinale G? SE5 Yes Yes Yes<br />
little blue-eyed grass Sisyrinchium montanum G5 S5 rare No Yes Yes Synonym: Sisyrinchium bermudianum<br />
water-parsnip Sium suave G5 S5 No Yes Yes<br />
carrion-flower Smilax herbacea G5 S4 No Yes Yes<br />
black nightshade Solanum nigrum G? SE1 Yes Yes Yes<br />
American black nightshade Solanum ptycanthum G5 S5 No Yes Yes Synonym: Solanum americanum<br />
buffalo-bur Solanum rostratum G5 SE1 Yes Yes Yes<br />
tall goldenrod Solidago altissima var. altissima NR S5 No Yes Yes<br />
silver-rod Solidago bicolor G5 S4? rare rare No Yes Yes<br />
blue-stemmed goldenrod Solidago caesia G5 S5 No Yes Yes<br />
Canada goldenrod Solidago canadensis G5 S5 No Yes Yes<br />
zig-zag goldenrod Solidago flexicaulis G5 S5 No Yes Yes<br />
giant goldenrod Solidago gigantea G5 S5 No Yes Yes<br />
hairy goldenrod Solidago hispida var. hispida G5 S5 rare rare No Yes Yes<br />
early goldenrod Solidago juncea G5 S5 No Yes Yes<br />
gray goldenrod Solidago nemoralis ssp. nemoralis G5 S5 No Yes Yes<br />
rough-leaved goldenrod Solidago patula G5 S5 rare rare No Yes Yes<br />
rough goldenrod Solidago rugosa ssp. rugosa G5 S5 No Yes Yes<br />
stout goldenrod Solidago squarrosa G4? S5 rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 17<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
bog goldenrod Solidago uliginosa G4G5 S5 rare rare No Yes Yes<br />
field sow-thistle Sonchus arvensis ssp. arvensis G? SE5 Yes Yes Yes Synonym: Sonchus uliginosa<br />
spiny-leaved sow-thistle Sonchus asper ssp. asper G? SE5 Yes Yes Yes<br />
annual sow-thistle Sonchus oleraceus G? SE5 Yes Yes Yes<br />
saltmarsh sand spurrey Spergularia media G? SE3 Yes Yes Yes Synonym: Arenaria media<br />
nodding ladies'-tresses Spiran<strong>the</strong>s cernua G5 S5 rare rare No Yes Yes<br />
rough hedge-nettle Stachys hispida G4Q S4S5 rare rare No Yes Yes Synonym: Stachy tenuifolia <strong>of</strong> ON reports<br />
marsh hedge-nettle Stachys palustris G5 SE5 rare rare No Yes Yes<br />
grass-leaved stitchwort Stellaria graminea G? SE5 Yes Yes Yes<br />
long-leaved chickweed Stellaria longifolia G5 S5 rare rare No Yes Yes<br />
common chickweed Stellaria media G? SE5 Yes Yes Yes<br />
rose twisted-stalk Streptopus roseus G5 S5 No Yes Yes<br />
prickly comfrey Symphytum asperum G? SE2 Yes Yes Yes<br />
common comfrey Symphytum <strong>of</strong>ficinale ssp. <strong>of</strong>ficinale NR SE5 Yes Yes Yes<br />
skunk-cabbage Symplocarpus foetidus G5 S5 rare rare No Yes Yes<br />
yellow pimpernel Taenidia integerrima G5 S4 rare rare No Yes Yes<br />
common feverfew Tanacetum par<strong>the</strong>nium G? SE3 Yes Yes Yes Synonym: Chrysan<strong>the</strong>mum par<strong>the</strong>nium<br />
common tansy Tanacetum vulgare G? SE5 Yes Yes Yes<br />
red-seeded dandelion Taraxacum erythrospermum G? SE5 Yes Yes No<br />
common dandelion Taraxacum <strong>of</strong>ficinale G5 SE5 Yes Yes Yes<br />
wood germander Teucrium canadense ssp. canadense G5 S5? rare rare No Yes Yes<br />
early meadow-rue Thalictrum dioicum G5 S5 No Yes Yes<br />
tall meadow-rue Thalictrum pubescens G5 S5 No Yes Yes Synonym: Thalictrum polygamum<br />
rue-anemone Thalictrum thalictroides G5 S3 rare rare rare No Yes No<br />
Synonym: Anemonella thalictroides / Historic record - 1911<br />
golden creeper Thladiantha dubia G? SE2 Yes Yes Yes<br />
field penny-cress Thlaspi arvense G? SE5 Yes Yes Yes<br />
creeping thyme Thymus praecox ssp. arcticus G? SE3 No Yes Yes Synonym: Thymus serpyllum<br />
foam-flower Tiarella cordifolia G5 S5 No Yes Yes<br />
Japanese hedge-parsley Torilis japonica G? SE4 Yes Yes Yes<br />
large goat's-beard Tragopogon dubius G? SE5 Yes Yes Yes Synonym: Tragopogon major<br />
common salsify Tragopogon porrifolius G? SE4? Yes Yes Yes<br />
meadow goat's-beard Tragopogon pratensis ssp. pratensis G? SE5 Yes Yes Yes<br />
marsh St. John's-wort Triadenum fraseri G4G5 S4 rare No Yes Yes<br />
star-flower Trientalis borealis ssp. borealis G5 S5 No Yes Yes<br />
rabbit-foot clover Trifolium arvense G? SE4 Yes Yes Yes<br />
hop clover Trifolium aureum G? SE5 Yes Yes Yes Synonym: Trifolium agrarium<br />
large hop clover Trifolium campestre G? SE5 Yes Yes Yes Synonym: Trifolium procumbens<br />
small hop clover Trifolium dubium G? SE4 Yes Yes Yes<br />
alsike clover Trifolium hybridum ssp. elegans G? SE4 Yes Yes Yes<br />
crimson clover Trifolium incarnatum G? SEH Yes Yes Yes Historic record - 1900<br />
red clover Trifolium pratense G? SE5 Yes Yes Yes<br />
white clover Trifolium repens G? SE5 Yes Yes Yes<br />
nodding trillium Trillium cernuum G5 S5 rare rare No Yes Yes<br />
red trillium Trillium erectum G5 S5 No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 18<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
white trillium Trillium grandiflorum G5 S5 No Yes Yes<br />
painted trillium Trillium undulatum G5 S5? rare rare No Yes Yes Historic record - 1947<br />
wild-c<strong>of</strong>fee Triosteum aurantiacum G5 S5 rare rare No Yes Yes<br />
common wheat Triticum aestivum G? SE1 Yes Yes Yes Synonyms: Triticum sativum, Triticum vulgare<br />
coltsfoot Tussilago farfara G? SE5 Yes Yes Yes<br />
European stinging nettle Urtica dioica ssp. dioica G5T? SE2 Yes Yes No<br />
American stinging nettle Urtica dioica ssp. gracilis G5T? S5 No Yes Yes Synonyms: Urtica gracilis, Urtica procera<br />
large-flowered bellwort Uvularia grandiflora G5 S5 No Yes Yes<br />
cow cockle Vaccaria hispanica G? SE3 Yes Yes Yes Synonyms: Saponaria vaccaria, Vaccaria pyramidata<br />
common valerian Valeriana <strong>of</strong>ficinalis G? SE5 Yes Yes Yes<br />
moth mullein Verbascum blattaria G? SE5 Yes Yes Yes<br />
clasping mullein Verbascum phlomoides G? SE1 Yes Yes Yes<br />
common mullein Verbascum thapsus G? SE5 Yes Yes Yes<br />
blue vervain Verbena hastata G5 S5 No Yes Yes<br />
narrow-leaved vervain Verbena simplex G5 S4 No Yes Yes<br />
hoary vervain Verbena stricta G5 S4 rare rare No Yes Yes<br />
white vervain Verbena urticifolia G5 S5 No Yes Yes<br />
field speedwell Veronica agrestis G? SE1? Yes Yes Yes<br />
American brooklime Veronica americana G5 S5 No Yes Yes<br />
European water speedwell Veronica anagallis-aquatica G5 SE5 Yes Yes Yes<br />
corn speedwell Veronica arvensis G? SE5 Yes Yes Yes<br />
water speedwell Veronica catenata G5 S4 rare rare No Yes Yes<br />
long-leaved speedwell Veronica longifolia G? SE3 Yes Yes Yes<br />
common speedwell Veronica <strong>of</strong>ficinalis G5 SE5 Yes Yes Yes<br />
purslane speedwell Veronica peregrina ssp. peregrina G5 S5 No Yes Yes<br />
bird's-eye speedwell Veronica persica G5 SE4 Yes Yes Yes<br />
marsh speedwell Veronica scutellata G5 S5 rare rare No Yes Yes<br />
thyme-leaved speedwell Veronica serpyllifolia ssp. serpyllifolia G?T? SE5 Yes Yes Yes<br />
cow vetch Vicia cracca G? SE5 Yes Yes Yes<br />
common vetch Vicia sativa ssp. nigra G? SE5 Yes Yes Yes Synonym: Vicia angustifolia<br />
slender vetch Vicia tetrasperma G? SE5 Yes Yes Yes<br />
hairy vetch Vicia villosa G5 SE5 Yes Yes Yes<br />
hooked-spur violet Viola adunca G5 S4S5 rare rare No Yes Yes<br />
wild pansy Viola arvensis G? SE4 Yes Yes Yes<br />
sweet white violet Viola blanda G4G5 S4S5 No Yes Yes Synonym: Viola incognita<br />
Canada violet Viola canadensis G5 S5 No Yes Yes<br />
dog violet Viola conspersa G5 S5 No Yes Yes<br />
marsh blue violet Viola cucullata G4G5 S5 rare No Yes Yes Synonym: Viola papilionacea <strong>of</strong> ON reports (in part)<br />
field pansy Viola kitaibeliana G? SE4 Yes Yes No Historic record - 1897<br />
nor<strong>the</strong>rn white violet Viola macloskeyi ssp. pallens G5 S5 rare rare No Yes Yes Synonym: Viola pallens<br />
sweet violet Viola odorata G? SE2 Yes Yes Yes<br />
yellow violet Viola pubescens G5 S5 No Yes Yes Synonyms: Viola eriocarpa, Viola pensylvanica<br />
kidney-leaved violet Viola renifolia G5 S5 rare No Yes Yes<br />
long-spurred violet Viola rostrata G5 S5 No Yes Yes<br />
arrow-leaved violet Viola sagittata var. sagittata G5 S4 rare rare No Yes Yes Synonym: Viola fimbriatula<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 19<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
Selkirk's violet Viola selkirkii G5? S5 rare rare No Yes Yes<br />
woolly blue violet Viola sororia G5 S5 No Yes Yes Synonym: Viola papilionacea <strong>of</strong> ON reports (in part)<br />
tricolor pansy Viola tricolor G? SE3 Yes Yes Yes<br />
barren strawberry Waldsteinia fragarioides G5 S5 No Yes Yes<br />
common cocklebur Xanthium strumarium G? S5 No Yes Yes Synonym: Xanthium pensylvanicum<br />
golden alexanders Zizia aurea G5 S5 rare rare No Yes Yes<br />
graminoid A non-woody, narrow-leaved plant, including grasses, sedges and rushes.<br />
crested wheatgrass Agropyron cristatum ssp. pectinatum G5 SE2 Yes Yes Yes Synonym: Agropyron pectiniforme<br />
colonial bent grass Agrostis capillaris G? SE2 Yes Yes Yes Synonym: Agrostis tenuis<br />
redtop Agrostis gigantea G4G5 SE5 Yes Yes Yes Synonym: Agrostis alba, in part<br />
upland bent grass Agrostis perennans G5 S5 rare rare No Yes Yes<br />
rough hair grass Agrostis scabra G5 S5 No Yes Yes<br />
creeping bent grass Agrostis stolonifera G5 S5 No Yes Yes Synonym: Agrostis palustris<br />
short-awned foxtail Alopecurus aequalis G5 S4S5 rare No Yes Yes<br />
marsh foxtail Alopecurus geniculatus G5 SE3 Yes Yes Yes<br />
meadow foxtail Alopecurus pratensis G? SE5 Yes Yes Yes<br />
big bluestem Andropogon gerardii G5 S4 rare rare No Yes Yes<br />
sweet grass Anthoxanthum odoratum ssp. odoratum G? SE4 Yes Yes Yes<br />
tall oatgrass Arrhena<strong>the</strong>rum elatius G? SE4 Yes Yes Yes<br />
wild oats Avena fatua G? SE3 Yes Yes Yes<br />
common oats Avena sativa G? SE3 Yes Yes Yes<br />
bearded short-husk Brachyelytrum erectum G5 S4S5 rare rare No Yes Yes<br />
fringed brome Bromus ciliatus G5 S5 No Yes Yes Synonym: Bromus dudleyi<br />
upright chess Bromus commutatus G? SE4 Yes Yes Yes<br />
s<strong>of</strong>t brome Bromus hordeaceus ssp. hordaceus G? SE2 Yes Yes Yes Synonym: Bromus mollis<br />
smooth brome Bromus inermis ssp. inermis G4G5T? SE5 Yes Yes Yes<br />
Japanese chess Bromus japonicus G? SE4 Yes Yes Yes<br />
broad-glumed brome Bromus latiglumis G5 S4 No Yes Yes<br />
cheat chess Bromus secalinus ssp. secalinus G? SE4 Yes Yes Yes<br />
downy chess Bromus tectorum G? SE5 Yes Yes Yes<br />
corn gromwell Buglossoides arvensis G? SE5 Yes Yes No Synonym: Lithospermum arvense<br />
Canada bluejoint Calamagrostis canadensis G5 S5 No Yes Yes<br />
sedge Carex alopecoidea G5 S5 rare No Yes Yes<br />
water sedge Carex aquatilis G5 S5 rare rare No Yes Yes<br />
sedge Carex arctata G5? S5 No Yes Yes<br />
sedge Carex a<strong>the</strong>rodes G5 S4S5 rare rare No Yes Yes<br />
golden sedge Carex aurea G5 S5 No Yes Yes<br />
sedge Carex bebbii G5 S5 No Yes Yes<br />
sedge Carex blanda G5? S5 No Yes Yes<br />
sedge Carex bromoides G5 S5 rare rare No Yes Yes<br />
sedge Carex brunnescens ssp. brunnescens G5 S5 rare rare No Yes Yes<br />
sedge Carex buxbaumii G5 S5 rare rare No Yes Yes<br />
sedge Carex canescens ssp. cannescens G5 S5 rare rare No Yes Yes<br />
sedge Carex castanea G5 S5 rare rare No Yes Yes<br />
sedge Carex cephaloidea G5 S5 rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 20<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
sedge Carex cephalophora G5 S5 rare No Yes Yes<br />
sedge Carex chordorrhiza G5 S5 rare rare No Yes No Historic record - 1908<br />
woodland sedge Carex communis G5 S5 No Yes Yes<br />
sedge Carex comosa G5 S5 rare No Yes Yes<br />
sedge Carex conoidea G4 S3 rare rare rare No Yes Yes<br />
sedge Carex crawfordii G5 S5 rare rare No Yes No<br />
sedge Carex crinita G5 S5 No Yes Yes<br />
sedge Carex cristatella G5 S5 No Yes Yes<br />
sedge Carex cryptolepis G4 S5 rare rare No Yes Yes<br />
woodland sedge Carex deweyana G5 S5 No Yes Yes<br />
sedge Carex diandra G5 S5 rare No Yes Yes<br />
sedge Carex digitalis G5 S4S5 rare rare No Yes Yes<br />
sedge Carex disperma G5 S5 No Yes Yes<br />
sedge Carex eburnea G5 S5 rare No Yes Yes<br />
sedge Carex echinata ssp. echinata G5 S5 rare rare No Yes No Synonym: Carex muricata<br />
sedge Carex flava G5 S5 rare No Yes Yes<br />
sedge Carex foenea G5 S5 rare rare No Yes Yes Synonym: Carex siccata<br />
sedge Carex gracilescens G5? S3 rare rare rare No Yes Yes<br />
sedge Carex gracillima G5 S5 No Yes Yes<br />
sedge Carex granularis G5 S5 No Yes Yes<br />
sedge Carex grayi G4 S4 rare rare No Yes Yes<br />
COSEWIC<br />
sedge Carex grisea rare rare No Yes Yes Synonym: Carex amphibola Steudel var. turgida Fernald<br />
sedge Carex hirtifolia G5 S5 rare No Yes Yes<br />
sedge Carex hitchcockiana G5 S5 rare No Yes Yes<br />
bristly sedge Carex hystericina G5 S5 No Yes Yes<br />
sedge Carex interior G5 S5 No Yes Yes<br />
bladder sedge Carex intumescens G5 S5 No Yes Yes<br />
lake sedge Carex lacustris G5 S5 No Yes Yes<br />
sedge Carex laevivaginata G5 S4 rare rare No Yes Yes<br />
sedge Carex lasiocarpa G5 S5 rare rare No Yes No<br />
sedge Carex laxiculmis G5 S4 rare rare No Yes Yes<br />
sedge Carex laxiflora G5 S5 rare No Yes Yes<br />
sedge Carex leptalea ssp. leptalea G5 S5 No Yes Yes<br />
sedge Carex leptonervia G4 S5 rare No Yes Yes<br />
sedge Carex limosa G5 S5 rare rare No Yes No<br />
sedge Carex lupulina G5 S5 No Yes Yes<br />
bristly sedge Carex lurida G5 S5 rare rare No Yes Yes<br />
sedge Carex magellanica ssp. irrigua G5T5 S5 rare rare No Yes Yes Synonym: Carex paupercula<br />
sedge Carex merritt-fernaldii G5 S5 rare rare No Yes No<br />
sedge Carex molesta G4 S4? rare No Yes Yes<br />
sedge Carex muhlenbergii var. muhlenbergii G5 S4S5 rare rare No Yes No<br />
sedge Carex pallescens G5 S5 rare rare No Yes No<br />
few-flowered sedge Carex pauciflora G5 S5 rare rare No Yes No Historic record - 1907<br />
sedge Carex peckii G4G5 S5 No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 21<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
sedge Carex pedunculata G5 S5 No Yes Yes<br />
sedge Carex pellita G5 S5 rare rare No Yes Yes Synonmy: Carex lanuginosa<br />
woodland sedge Carex pensylvanica G5 S5 No Yes Yes<br />
plantain-leaved sedge Carex plantaginea G5 S5 No Yes Yes<br />
broad-leaved sedge Carex platyphylla G5 S5 No Yes Yes<br />
sedge Carex praegracilis G5 SE5 Yes Yes Yes<br />
sedge Carex prairea G5? S5 rare rare No Yes Yes<br />
sedge Carex prasina G4 S4 rare rare No Yes No Historic record - 1935<br />
sedge Carex projecta G5 S5 rare No Yes Yes<br />
sedge Carex pseudo-cyperus G5 S5 No Yes Yes<br />
sedge Carex radiata G4 S5 No Yes Yes<br />
Synonym: Carex rosea <strong>of</strong> most early ON reports, including<br />
PCF<br />
sedge Carex retrorsa G5 S5 No Yes Yes<br />
sedge Carex rosea G5 S5 No Yes Yes Synonym: Carex convoluta<br />
sedge Carex rugosperma G5 S5 rare rare No Yes Yes Synonym: Carex tonsa var. rugosperma<br />
sedge Carex scabrata G5 S5 rare No Yes Yes<br />
sedge Carex scoparia G5 S5 rare rare No Yes Yes<br />
sedge Carex sparganioides G5 S5 No Yes Yes<br />
sedge Carex spicata G? SE5 Yes Yes Yes<br />
sedge Carex sprengelii G5? S5 rare rare No Yes Yes<br />
sedge Carex stipata G5 S5 No Yes Yes<br />
water sedge Carex stricta G5 S5 No Yes Yes<br />
sedge Carex sychnocephala G4 S4 rare rare No Yes Yes<br />
sedge Carex tenera G5 S5 No Yes Yes<br />
sedge Carex torta G5 SX rare rare rare No Yes No Historic record - 1910<br />
sedge Carex tribuloides G5 S4S5 rare rare No Yes Yes<br />
sedge Carex trisperma var. trisperma G5 S5 rare rare No Yes Yes<br />
bladder sedge Carex tuckermanii G4 S4 rare No Yes Yes<br />
sedge Carex utriculata G5 S5 rare No Yes Yes<br />
Synonym: Carex rostrata <strong>of</strong> most ON reports, including<br />
PCF<br />
sedge Carex vaginata G5 S5 rare rare No Yes Yes<br />
sedge Carex vesicaria G5 S5 rare rare No Yes Yes<br />
sedge Carex viridula ssp. viridula G5 S5 rare rare No Yes Yes<br />
fox sedge Carex vulpinoidea G5 S5 No Yes Yes<br />
sedge Carex woodii G4Q S4 rare rare No Yes Yes<br />
long-spined sandbur Cenchrus longispinus G5 S4 No Yes Yes<br />
wood reed Cinna arundinacea G5 S4 rare rare No Yes Yes<br />
nodding wood reed Cinna latifolia G5 S5 rare No Yes Yes<br />
crested dog's-tail Cynosurus cristatus G? SE1 Yes Yes No Historic record - 1892<br />
riverbank umbrella-sedge Cyperus bipartitus G5 S5 rare rare No Yes Yes Synonym: Cyperus rivularis<br />
yellow nut-grass Cyperus esculentus G5 S5 rare rare No Yes Yes<br />
slender umbrella-sedge Cyperus lupulinus ssp. macilentus G5 S4 rare rare No Yes Yes Synonym: Cyperus filiculmis<br />
fragrant umbrella-sedge Cyperus odoratus G5 S5 rare rare No Yes Yes Synonyms: Cyperus engelmannii, Cyperus ferruginescens<br />
straw-colored umbrella-sedge Cyperus strigosus G5 S5 rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 22<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
orchard grass Dactylis glomerata G? SE5 Yes Yes Yes<br />
poverty oat-grass Danthonia spicata G5 S5 No Yes Yes<br />
COSEWIC<br />
fall witch-grass Digitaria cognatum ssp. cognatum G5 S1 rare rare rare No Yes Yes<br />
Synonym: Leptoloma cognatum / Native status is uncertain<br />
smooth crabgrass Digitaria ischaemum G? SE5 Yes Yes Yes<br />
large crabgrass Digitaria sanguinalis G5 SE5 Yes Yes Yes<br />
three-way sedge Dulichium arundinaceum G5 S5 rare rare No Yes Yes<br />
barnyard grass Echinochloa crusgalli G? SE5 Yes Yes Yes<br />
small-spiked barnyard grass Echinochloa microstachya G5Q S4S5 No Yes Yes Synonym: Echinochloa wiegandii<br />
needle spike-rush Eleocharis acicularis G5 S5 rare rare No Yes Yes<br />
red-footed spike-rush Eleocharis erythropoda G5 S5 No Yes Yes<br />
intermediate spike-rush Eleocharis intermedia G5 S4 rare rare No Yes Yes<br />
obtuse spike-rush Eleocharis obtusa G5 S5 No Yes Yes<br />
marsh spike-rush Eleocharis smallii G5? S5 rare No Yes Yes Synonym: Eleocharis palustris <strong>of</strong> ON reports<br />
Canada wild-rye Elymus canadensis G5 S4S5 rare rare No Yes No Historic record - 1911<br />
bottlebrush grass Elymus hystrix G5 S5 No Yes Yes Synonym: Hystrix patula<br />
quack grass Elymus repens G? SE5 Yes Yes Yes Synonym: Agropyron repens<br />
riverbank wild-rye Elymus riparius G5 S4? rare rare No Yes Yes<br />
western wheatgrass Elymus smithii G5 SE2 Yes Yes No Synonym: Agropyron smithii / Historic record - 1918<br />
slender wheatgrass Elymus trachycaulus ssp. trachycaulus G5T5 S5? rare rare No Yes Yes Synonym: Agropyron trachycaulum<br />
hairy wild-rye Elymus villosus G5 S4 rare rare No Yes Yes<br />
Virginia wild-rye Elymus virginicus var. virginicus G5 S5 No Yes Yes<br />
Wiegand's wild-rye Elymus wiegandii G? S4 rare rare No Yes Yes<br />
stink grass Eragrostis cilianensis G? SE5 Yes Yes Yes Synonym: Eragrostis megastachya<br />
tall love-grass Eragrostis hypnoides G5 S4 rare rare No Yes No<br />
little love-grass Eragrostis minor G? SE5 Yes Yes Yes Synonym: Eragrostis pooides<br />
tufted love-grass Eragrostis pectinacea var. pectinacea G5 S5 No Yes Yes<br />
slender cotton-grass Eriophorum gracile G5 S5 rare rare No Yes No Historic record - 1890<br />
shea<strong>the</strong>d cotton-grass Eriophorum vaginatum ssp. spissum G5T5 S5 rare rare No Yes No Synonym: Eriophorum spissum / Historic record - 1890<br />
tawny cotton-grass Eriophorum virginicum G5 S5 rare rare No Yes Yes<br />
thin-leaved cotton-grass Eriophorum viridi-carinatum G4 S5 rare rare No Yes Yes<br />
tall fescue Festuca arundinacea G? SE5 Yes Yes Yes<br />
hard fescue Festuca brevipila G? SE4 Yes Yes Yes<br />
Synonyms: Festuca longifolia <strong>of</strong> ON reports including PCF,<br />
Festuca ovina, Festuca trachyphylla<br />
slender fescue Festuca filiformis G5 SE2 Yes Yes No Synonym: Festuca tenuifolia / Historic record - 1891<br />
meadow fescue Festuca pratensis G5 SE5 Yes Yes Yes Synonym: Festuca elatior<br />
red fescue Festuca rubra ssp. rubra G5 S5 No Yes Yes<br />
nodding fescue Festuca subverticillata G5 S4 No Yes Yes Synonym: Festuca obtusa<br />
nor<strong>the</strong>rn manna grass Glyceria borealis G5 S5 rare rare No Yes Yes Synonym: Glyceria fluitans<br />
rattlesnake manna grass Glyceria canadensis G5 S4S5 rare rare No Yes No<br />
tall manna grass Glyceria grandis G5 S4S5 No Yes Yes<br />
rough manna grass Glyceria maxima G? SE5 Yes Yes Yes<br />
floating manna grass Glyceria septentrionalis G5 S4 rare rare No Yes Yes<br />
fowl manna grass Glyceria striata G5 S5 No Yes Yes<br />
velvet grass Holcus lanatus G? SE2 Yes Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 23<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
foxtail barley Hordeum jubatum ssp. jubatum G5 SE5 Yes Yes Yes<br />
common barley Hordeum vulgare G? SE2 Yes Yes Yes<br />
alpine rush Juncus alpinoarticulatus G5 S5 rare rare No Yes Yes Synonym: Juncus alpinus<br />
jointed rush Juncus articulatus G5 S5 No Yes Yes<br />
Baltic rush Juncus balticus G5 S5 rare rare No Yes Yes<br />
short-tailed rush Juncus brevicaudatus G5 S5 rare rare No Yes No Historic record - 1891<br />
toad rush Juncus bufonius G5 S5 No Yes Yes<br />
Canada rush Juncus canadensis G5 S5 rare rare No Yes No Historic record - 1908<br />
compressed rush Juncus compressus G5 SE5 Yes Yes Yes<br />
path rush Juncus dudleyi G5 S5 No Yes Yes<br />
s<strong>of</strong>t rush Juncus effusus ssp. solutus G5 S5 No Yes Yes<br />
knotted rush Juncus nodosus G5 S5 No Yes Yes<br />
path rush Juncus pylaei G5 S5 rare rare No Yes Yes<br />
path rush Juncus tenuis G5 S5 No Yes Yes<br />
Torrey's rush Juncus torreyi G5 S5 No Yes Yes<br />
rice cut-grass Leersia oryzoides G5 S5 No Yes Yes<br />
white cut-grass Leersia virginica G5 S4 rare rare No Yes Yes<br />
perennial rye-grass Lolium perenne G? SE4 Yes Yes Yes Synonym: Lolium multiflorum<br />
poison rye-grass Lolium temulentum G? SEH Yes Yes No Historic record - 1912<br />
hairy woodrush Luzula acuminata G5 S5 No Yes Yes<br />
many-flowered woodrush Luzula multiflora ssp. multiflora G5 S5 rare rare No Yes Yes<br />
melic grass Melica smithii G4 S4? rare rare No Yes Yes<br />
wood millet Milium effusum G5 S4S5 rare rare No Yes No Historic record - 1911<br />
Amur silver grass Miscanthus sacchariflorus G? SEH Yes Yes Yes<br />
wire-stemmed muhly Muhlenbergia frondosa G5 S4 rare rare No Yes Yes<br />
wild timothy Muhlenbergia glomerata G5 S5 rare rare No Yes No Historic record - 1910<br />
Mexican muhly Muhlenbergia mexicana var. mexicana G5 S5 No Yes Yes<br />
woodland muhly Muhlenbergia sylvatica var. sylvatica G5 S1 rare rare rare No Yes Yes<br />
white-grained mountain-rice Oryzopsis asperifolia G5 S5 No Yes Yes<br />
black-grained mountain-rice Oryzopsis racemosa G5 S4 rare rare No Yes Yes<br />
dwarf panic grass Panicum acuminatum var. acuminatum G5 S5 No Yes Yes<br />
Synonyms: Dichan<strong>the</strong>lium acuminatum, Panicum<br />
implicatum, Panicum lanuginosum, Panicum praecocius,<br />
Panicum villosissimum<br />
witch grass Panicum capillare G5 S5 No Yes Yes<br />
fall panic grass Panicum dichotomiflorum G5 SE5 Yes Yes Yes<br />
broad-leaved panic grass Panicum latifolium G5 S4 rare rare No Yes Yes<br />
narrow-leaved panic grass Panicum linearifolium G5 S4S5 rare rare No Yes Yes<br />
broom-corn millet Panicum miliaceum G? SE4 Yes Yes Yes<br />
reed canary grass Phalaris arundinacea G5 S5 No Yes Yes<br />
canary grass Phalaris canariensis G? SE2 Yes Yes No Historic record - 1890<br />
timothy Phleum pratense G? SE5 Yes Yes Yes<br />
common reed Phragmites australis G5 S5 No Yes Yes Synonym: Phragmites communis<br />
woodland bluegrass Poa alsodes G4? S4 rare rare No Yes Yes<br />
annual bluegrass Poa annua G? SE5 Yes Yes Yes<br />
bulbous bluegrass Poa bulbosa G? SE3 Yes Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 24<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
Canada bluegrass Poa compressa G? S5 No Yes Yes<br />
wood bluegrass Poa nemoralis G5 SE3 Yes Yes Yes<br />
fowl bluegrass Poa palustris G5 S5 No Yes Yes<br />
Kentucky bluegrass Poa pratensis ssp. pratensis G5 S5 No Yes Yes<br />
two-rayed bluegrass Poa saltuensis G5? S4 rare rare No Yes Yes<br />
rough bluegrass Poa trivialis G? SE3 Yes Yes Yes<br />
saltmarsh grass Puccinellia distans G5 SE5 Yes Yes Yes<br />
white beakrush Rhynchospora alba G5 S5 rare rare No Yes No<br />
false melic grass Schizachne purpurascens ssp. purpurascens G5 S5 No Yes Yes<br />
little bluestem Schizachyrium scoparium G5 S4 rare rare No Yes Yes Synonym: Andropogon scoparius<br />
hard-stemmed bulrush Scirpus acutus G5 S5 rare rare No Yes Yes<br />
green bulrush Scirpus atrovirens G5 S5 No Yes Yes Synonym: Scirpus hattorianus (in part)<br />
Clinton's club-rush Scirpus clintonii G4 S2 rare rare rare No Yes Yes<br />
wool-grass Scirpus cyperinus G5 S5 No Yes Yes<br />
river bulrush Scirpus fluviatilis G5 S4S5 rare rare No Yes Yes<br />
alpine cotton-grass Scirpus hudsonianus G5 S5 rare rare No Yes Yes<br />
red-shea<strong>the</strong>d bulrush Scirpus microcarpus G5 S5 No Yes Yes Synonym: Scirpus rubrotinctus<br />
stalked wool-grass Scirpus pedicellatus G4 S4? rare rare No Yes Yes Synonym: Scirpus cyperinus var. pedicellatus<br />
lined bulrush Scirpus pendulus G5 S5 rare No Yes Yes<br />
American sword-grass Scirpus pungens G5 S5 rare rare No Yes Yes Synonym: Scirpus americanus<br />
s<strong>of</strong>t-stemmed bulrush Scirpus validus G? S5 No Yes Yes<br />
rye Secale cereale G? SE3 Yes Yes Yes<br />
foxtail millet Setaria italica G? SE1 Yes Yes No Historic record - 1890<br />
yellow foxtail Setaria pumila G? SE5 Yes Yes Yes Synonym: Setaria glauca<br />
bristly foxtail Setaria verticillata G? SE4 Yes Yes Yes<br />
green foxtail Setaria viridis G? SE5 Yes Yes Yes<br />
indian grass Sorghastrum nutans G5 S4 rare rare No Yes Yes<br />
green-fruited burreed Sparganium emersum ssp. emersum NR S5 rare No Yes Yes Synonym: Sparganium chlorocarpum<br />
giant burreed Sparganium eurycarpum G5 S5 rare No Yes Yes<br />
tall cord grass Spartina pectinata G5 S4 rare rare Yes Yes No<br />
Historic record - 1910 / Although native elsewhere in <strong>the</strong><br />
province, <strong>the</strong> Peel record is an introduction.<br />
slender wedge grass Sphenopholis intermedia G5 S4S5 No Yes Yes<br />
sand dropseed Sporobolus cryptandrus NR S4 rare rare No Yes Yes<br />
overlooked dropseed Sporobolus neglectus G5 S4 No Yes Yes<br />
enshea<strong>the</strong>d dropseed Sporobolus vaginiflorus G5 S4 No Yes Yes<br />
marsh arrow-grass Triglochin palustre G5 S5 rare rare No Yes Yes<br />
narrow-leaved cattail Typha angustifolia G5 S5 No Yes Yes<br />
common cattail Typha latifolia G5 S5 No Yes Yes<br />
hybrid cattail Typha x glauca HYB S5 No Yes Yes = Typha angustifolia x Typha latifolia<br />
hybrid wheatgrass x Elyhordeum macounii HYB S1 No Yes Yes<br />
corn Zea mays G? SE2 Yes Yes Yes<br />
common wild rice Zizania aquatica G5 S4 rare rare No Yes Yes<br />
nor<strong>the</strong>rn wild rice Zizania palustris G4G5 S4 rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 25<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes<br />
= Elymus trachycaulus x Hordeum jubatum / Synonyms: x<br />
Agrohordeum macounii, Elymus macounii<br />
Synonym: Zizania aquatica <strong>of</strong> early ON records (in part) /<br />
Historic record - 1927
Common Name Scientific Name<br />
herbaceous vines A non-woody plant with trailing stems<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
climbing fumitory Adlumia fungosa G4 S4 rare rare No Yes No<br />
virgin's-bower Clematis virginiana G5 S5 No Yes Yes<br />
shrub A multi-stemmed woody plant, usually shorter than a tree.<br />
S-Rank<br />
COSEWIC<br />
Saskatoon berry Amelanchier alnifolia G5 S4? rare rare No Yes Yes Synonym: Amelanchier humilis<br />
roundleaf juneberry Amelanchier sanguinea G5 S5? No Yes Yes Synonym: Amelanchier huronensis<br />
running juneberry Amelanchier stolonifera G5 S4? rare rare No Yes Yes<br />
bog rosemary Andromeda polifolia ssp. glaucophylla G5T5 S5 rare rare No Yes Yes Synonym: Andromeda glaucophylla<br />
bristly sarsaparilla Aralia hispida G5 S5 rare rare No Yes No Historic record - 1889<br />
black chokeberry Aronia melanocarpa G5 S5 rare rare No Yes Yes Synonyms: Aronia prunifolia, Pyrus melanocarpa<br />
Oregon-grape Berberis aquifolium G5 SE2 Yes Yes Yes Synonym: Mahonia aquifolia<br />
Japanese barberry Berberis thunbergii G? SE5 Yes Yes Yes<br />
common barberry Berberis vulgaris G? SE5 Yes Yes Yes<br />
Siberian pea-tree Caragana arborescens G? SE1 Yes Yes Yes<br />
New Jersey tea Ceanothus americanus G5 S4 rare rare No Yes Yes<br />
buttonbush Cephalanthus occidentalis G5 S5 rare rare No Yes Yes<br />
lea<strong>the</strong>rleaf Chamaedaphne calyculata G5 S5 rare rare No Yes Yes<br />
common pipsissewa Chimaphila umbellata ssp. cisatlantica G5 S5 rare rare No Yes No Historic record - 1889<br />
sweet-fern Comptonia peregrina G5 S5 rare rare No Yes Yes Synonym: Myrica asplenifolia<br />
silky dogwood Cornus amomum ssp. obliqua G5T5 S5 rare No Yes Yes Synonym: Cornus obliqua<br />
bunchberry Cornus canadensis G5 S5 No Yes Yes<br />
gray dogwood Cornus foemina ssp. racemosa G5? S5 No Yes Yes Synonym: Cornus racemosa<br />
round-leaved dogwood Cornus rugosa G5 S5 No Yes Yes<br />
red osier Cornus stolonifera G5 S5 No Yes Yes<br />
beaked hazel Corylus cornuta ssp. cornuta G5 S5 No Yes Yes<br />
Persian daphne Daphne mezereum G? SE2 Yes Yes Yes<br />
water-willow Decodon verticillatus G5 S5 rare rare No Yes Yes<br />
bush honeysuckle Diervilla lonicera G5 S5 No Yes Yes<br />
lea<strong>the</strong>rwood Dirca palustris G4 S4? rare No Yes Yes<br />
running strawberry-bush Euonymus obovata G5 S5 No Yes Yes<br />
forsythia Forsythia viridissima G? SE2 Yes Yes Yes<br />
creeping snowberry Gaul<strong>the</strong>ria hispidula G5 S5 rare rare No Yes Yes<br />
wintergreen Gaul<strong>the</strong>ria procumbens G5 S5 No Yes Yes<br />
black huckleberry Gaylussacia baccata G5 S4 rare rare No Yes Yes<br />
witch-hazel Hamamelis virginiana G5 S5 No Yes Yes<br />
great St. John's-wort Hypericum ascyron G4 S4 rare rare No Yes No Synonym: Hypericum pyramidatum<br />
winterberry Ilex verticillata G5 S5 No Yes Yes<br />
common juniper Juniperus communis var. depressa G5T5 S5 rare rare No Yes Yes<br />
bog laurel Kalmia polifolia G5 S5 rare rare No Yes No<br />
Labrador-tea Ledum groenlandicum G5 S5 rare rare No Yes Yes<br />
common privet Ligustrum vulgare G? SE5 Yes Yes Yes<br />
spicebush Lindera benzoin G5 S5 rare rare No Yes Yes<br />
twinflower Linnaea borealis ssp. longiflora G5T5 S5 rare No Yes Yes<br />
fly honeysuckle Lonicera canadensis G5 S5 No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 26<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
goat-leaf honeysuckle Lonicera caprifolium G? SE1 Yes Yes Yes<br />
ornamental honeysuckle Lonicera chrysantha NR SE1 Yes Yes Yes<br />
Morrow's honeysuckle Lonicera morrowii G? SE3 Yes Yes Yes<br />
swamp fly honeysuckle Lonicera oblongifolia G4 S5 rare rare No Yes Yes<br />
Tartarian honeysuckle Lonicera tatarica G? SE5 Yes Yes Yes<br />
mountain fly honeysuckle Lonicera villosa G5 S5 rare rare No Yes Yes<br />
hybrid honeysuckle Lonicera x bella HYB SE2 Yes Yes Yes = Lonicera morrowii x Lonicera tatarica<br />
European fly honeysuckle Lonicera xylosteum G? SE2 Yes Yes Yes<br />
partridge-berry Mitchella repens G5 S5 No Yes Yes<br />
mock-orange Philadelphus coronarius G? SE1 Yes Yes Yes<br />
ninebark Physocarpus opulifolius G5 S5 rare rare No Yes Yes<br />
shrubby cinquefoil Potentilla fruticosa ssp. floribunda G5 S5 rare rare No Yes Yes<br />
choke cherry Prunus virginiana ssp. virginiana G5 S5 No Yes Yes<br />
alder-leaved buckthorn Rhamnus alnifolia G5 S5 rare No Yes Yes<br />
common buckthorn Rhamnus cathartica G? SE5 Yes Yes Yes<br />
glossy buckthorn Rhamnus frangula G? SE5 Yes Yes Yes Synonym: Frangula alnus<br />
smooth sumac Rhus glabra G5 S5 rare rare No Yes Yes<br />
poison-ivy Rhus radicans ssp. rydbergii G5T? S5 No Yes Yes Synonym: Toxicodendron rydbergii<br />
staghorn sumac Rhus typhina G5 S5 No Yes Yes<br />
wild black currant Ribes americanum G5 S5 No Yes Yes<br />
prickly gooseberry Ribes cynosbati G5 S5 No Yes Yes<br />
skunk currant Ribes glandulosum G5 S5 rare rare No Yes Yes<br />
smooth gooseberry Ribes hirtellum G5 S5 rare rare No Yes Yes Historic record - 1891<br />
nor<strong>the</strong>rn black currant Ribes hudsonianum G5 S5 rare rare No Yes Yes<br />
black garden currant Ribes nigrum G? SE2 Yes Yes Yes<br />
golden currant Ribes odoratum G4G5 SE4 Yes Yes Yes Synonym: Ribes aureum<br />
red garden currant Ribes rubrum G4G5 SE5 Yes Yes Yes Synonym: Ribes sativum<br />
swamp red currant Ribes triste G5 S5 No Yes Yes<br />
European currant Ribes uva-crispa G? SE1 Yes Yes No Synonym: Ribes grossularia<br />
smooth rose Rosa blanda G5 S5 No Yes Yes<br />
dog rose Rosa canina G? SE2 Yes Yes Yes<br />
multiflora rose Rosa multiflora G? SE4 Yes Yes Yes<br />
swamp rose Rosa palustris G5 S5 rare rare No Yes Yes<br />
sweetbrier rose Rosa rubiginosa NR SE4 Yes Yes Yes Synonym: Rosa eglanteria<br />
mountain blackberry Rubus allegheniensis G5 S5 No Yes Yes<br />
wild red raspberry Rubus idaeus ssp. melanolasius G5T5 S5 No Yes Yes Synonym: Rubus strigosus<br />
black raspberry Rubus occidentalis G5 S5 No Yes Yes<br />
purple-flowering raspberry Rubus odoratus G5 S5 No Yes Yes<br />
Bebb's willow Salix bebbiana G5 S5 No Yes Yes<br />
hoary willow Salix candida G5 S5 rare rare No Yes Yes<br />
goat willow Salix caprea G? SE1 Yes Yes Yes<br />
gray willow Salix cinerea G5 SE2 Yes Yes Yes Synonym: Salix humilis <strong>of</strong> PCF<br />
pussy willow Salix discolor G5 S5 No Yes Yes<br />
heart-leaved willow Salix eriocephala G5 S5 No Yes Yes Synonym: Salix rigida<br />
sandbar willow Salix exigua G5 S5 rare No Yes Yes Synonym: Salix interior<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 27<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
shining willow Salix lucida G5 S5 rare No Yes Yes<br />
bog willow Salix pedicellaris G4 S5 rare rare No Yes No<br />
bay-leaved willow Salix pentandra G? SE2 Yes Yes Yes<br />
slender willow Salix petiolaris G4 S5 No Yes Yes Synonym: Salix gracilis<br />
basket willow Salix purpurea G5 SE4 Yes Yes Yes<br />
autumn willow Salix serissima G4 S5 rare rare No Yes Yes<br />
common elderberry Sambucus canadensis G5 S5 No Yes Yes<br />
red-berried elderberry Sambucus racemosa ssp. pubens G5T4T5 S5 No Yes Yes Synonym: Sambucus pubens<br />
Canada soapberry Shepherdia canadensis G5 S5 rare rare No Yes Yes<br />
false spiraea Sorbaria sorbifolia G5 SE4 Yes Yes Yes<br />
common meadowsweet Spiraea alba G5 S5 No Yes Yes Synonym: Spiraea latifolia<br />
Asian meadowsweet Spiraea chamaedryfolia G? SE1 Yes Yes Yes<br />
Japanese meadowsweet Spiraea japonica G5 SE1 Yes Yes Yes<br />
willow-leaved meadowsweet Spiraea salicifolia G? SE1 Yes Yes Yes<br />
hardhack Spiraea tomentosa G5 S4S5 rare rare No Yes No<br />
bladdernut Staphylea trifolia G5 S4 rare rare No Yes Yes<br />
snowberry Symphoricarpos albus G5 S5 rare No Yes Yes<br />
wolfberry Symphoricarpos occidentalis G5 SE3 Yes Yes Yes<br />
lilac Syringa vulgaris G? SE5 Yes Yes Yes<br />
American yew Taxus canadensis G5 S5 No Yes Yes<br />
lowbush blueberry Vaccinium angustifolium G5 S5 No Yes Yes<br />
highbush blueberry Vaccinium corymbosum G5 S4 rare rare No Yes Yes<br />
large cranberry Vaccinium macrocarpon G4 S4S5 rare rare No Yes Yes<br />
velvet-leaf blueberry Vaccinium myrtilloides G5 S5 rare rare No Yes Yes<br />
small cranberry Vaccinium oxycoccos G5 S5 rare rare No Yes Yes<br />
dryland blueberry Vaccinium pallidum G5 S4 rare rare No Yes Yes Synonym: Vaccinium vacillans<br />
maple-leaved viburnum Viburnum acerifolium G5 S5 No Yes Yes<br />
wild-raisin Viburnum cassinoides G5 S5 rare rare No Yes No<br />
hobblebush Viburnum lantanoides G5 S5 rare rare No Yes Yes Synonym: Viburnum alnifolium<br />
guelder-rose Viburnum opulus G5 SE4 Yes Yes Yes<br />
downy arrow-wood Viburnum rafinesquianum G5 S5 rare rare No Yes Yes<br />
highbush cranberry Viburnum trilobum G5 S5 No Yes Yes<br />
prickly-ash Zanthoxylum americanum G5 S5 rare rare No Yes Yes<br />
small trees A single stemmed woody plant reaching less than 2m in height.<br />
mountain maple Acer spicatum G5 S5 No Yes Yes<br />
speckled alder Alnus incana ssp. rugosa G5T5 S5 No Yes Yes Synonym: Alnus rugosa<br />
downy juneberry Amelanchier arborea G5 S5 No Yes Yes<br />
smooth juneberry Amelanchier laevis G4G5Q S5 No Yes Yes<br />
blue-beech Carpinus caroliniana ssp. virginiana G5 S5 No Yes Yes<br />
alternate-leaved dogwood Cornus alternifolia G5 S5 No Yes Yes<br />
hawthorn Crataegus calpodendron G5 S4S5 rare rare No Yes Yes<br />
hawthorn Crataegus corusca G3G5 S2S3 rare rare No Yes Yes<br />
hawthorn Crataegus holmesiana G5 S4S5 rare No Yes Yes<br />
hawthorn Crataegus macracantha NR S5 No Yes Yes<br />
hawthorn Crataegus macrosperma G5 S5 rare rare No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 28<br />
COSEWIC<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
English hawthorn Crataegus monogyna G5 SE5 Yes Yes Yes<br />
hawthorn Crataegus pedicellata G5 S4 No Yes Yes<br />
hawthorn Crataegus pringlei G5 S5 rare rare No Yes Yes<br />
hawthorn Crataegus pruinosa G5 S4? rare rare No Yes Yes<br />
hawthorn Crataegus punctata G5 S5 No Yes Yes<br />
hawthorn Crataegus scabrida G3G4 S4 rare rare rare No Yes Yes<br />
hawthorn Crataegus schuettei G3G4 S4 rare rare No Yes Yes<br />
hawthorn Crataegus submollis G5 S4S5 rare rare No Yes No<br />
hawthorn Crataegus succulenta G5 S4S5 rare rare No Yes Yes<br />
Russian-olive Elaeagnus angustifolia G? SE3 Yes Yes Yes<br />
winged spindle-tree Euonymus alata Yes Yes No<br />
spindle tree Euonymus europaea G? SE2 Yes Yes Yes<br />
Siberian crabapple Malus baccata G? SE1 Yes Yes Yes Synonym: Pyrus baccata<br />
mountain-holly Nemopanthus mucronatus G5 S5 rare rare No Yes Yes<br />
Canada plum Prunus nigra G4G5 S4 No Yes Yes<br />
pin cherry Prunus pensylvanica G5 S5 No Yes Yes<br />
American mountain-ash Sorbus americana G5 S5 rare rare No Yes Yes Synonym: Pyrus americana<br />
Siberian elm Ulmus pumila G? SE3 Yes Yes Yes<br />
wayfaring tree Viburnum lantana G? SE2 Yes Yes Yes<br />
nannyberry Viburnum lentago G5 S5 No Yes Yes<br />
trees A woody plant usually with a single stem which can reach heights <strong>of</strong> several metres.<br />
balsam fir Abies balsamea G5 S5 No Yes Yes<br />
Manitoba maple Acer negundo G5 S5 No Yes Yes<br />
Norway maple Acer platanoides G? SE5 Yes Yes Yes<br />
red maple Acer rubrum G5 S5 No Yes Yes<br />
silver maple Acer saccharinum G5 S5 No Yes Yes<br />
black maple Acer saccharum ssp. nigrum G5Q S4? No Yes Yes Synonym: Acer nigrum<br />
sugar maple Acer saccharum ssp. saccharum G5T? S5 No Yes Yes<br />
horse-chestnut Aesculus hippocastanum G? SE2 Yes Yes Yes<br />
tree-<strong>of</strong>-heaven Ailanthus altissima G? SE5 Yes Yes Yes<br />
yellow birch Betula alleghaniensis G5 S5 No Yes Yes Synonym: Betula lutea<br />
white birch Betula papyrifera G5 S5 No Yes Yes<br />
European weeping birch Betula pendula G? SE4 Yes Yes Yes<br />
dwarf birch Betula pumila G5 S5 rare rare No Yes Yes Synonym: Betula glandulifera<br />
bitternut hickory Carya cordiformis G5 S5 No Yes Yes<br />
shagbark hickory Carya ovata var. ovata G5 S5 No Yes Yes<br />
nor<strong>the</strong>rn catalpa Catalpa speciosa GU SE1 Yes Yes Yes<br />
American beech Fagus grandifolia G5 S5 No Yes Yes<br />
white ash Fraxinus americana G5 S5 No Yes Yes<br />
European ash Fraxinus excelsior G? SE2 Yes Yes Yes<br />
black ash Fraxinus nigra G5 S5 No Yes Yes<br />
red ash Fraxinus pennsylvanica G5 S5 No Yes Yes<br />
honey locust Gleditsia triacanthos G5 S2 Yes Yes Yes<br />
butternut Juglans cinerea G3G4 S3? No Yes Yes<br />
black walnut Juglans nigra G5 S4 No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 29<br />
COSEWIC<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
COSEWIC<br />
eastern red cedar Juniperus virginiana G5 S5 rare No Yes Yes<br />
European larch Larix decidua G? SE2 Yes Yes Yes<br />
tamarack Larix laricina G5 S5 No Yes Yes<br />
common apple Malus pumila G5 SE5 Yes Yes Yes Synonyms: Malus domestica, Pyrus malus<br />
white mulberry Morus alba G? SE5 Yes Yes Yes<br />
hop-hornbeam Ostrya virginiana G5 S5 No Yes Yes<br />
Norway spruce Picea abies G? SE3 Yes Yes Yes<br />
white spruce Picea glauca G5 S5 No Yes Yes<br />
black spruce Picea mariana G5 S5 rare rare No Yes No<br />
jack pine Pinus banksiana G5 S5 Yes Yes Yes<br />
red pine Pinus resinosa G5 S5 rare rare No Yes Yes Native status <strong>of</strong> this species is uncertain.<br />
white pine Pinus strobus G5 S5 No Yes Yes<br />
Scots pine Pinus sylvestris G? SE5 Yes Yes Yes<br />
sycamore Platanus occidentalis G5 S4 rare rare No Yes Yes<br />
plane-tree Platanus x acerifolia GU SE1 Yes Yes Yes Synonym: Platanus hybrida<br />
white poplar Populus alba G5 SE5 Yes Yes Yes<br />
balsam poplar Populus balsamifera ssp. balsamifera G5 S5 No Yes Yes<br />
eastern cottonwood Populus deltoides ssp. monilifera G5 S5 No Yes Yes<br />
large-tooth aspen Populus grandidentata G5 S5 No Yes Yes<br />
Lombardy poplar Populus nigra G5 SE4 Yes Yes Yes<br />
trembling aspen Populus tremuloides G5 S5 No Yes Yes<br />
hybrid poplar Populus x berolinensis HYB SE1 Yes Yes Yes = Populus laurifolia x Populus nigra<br />
gray poplar Populus x canescens HYB SE1 Yes Yes Yes = Populus alba x Populus tremula<br />
hybrid aspen Populus x heimbergeri HYB SE1 Yes Yes Yes = Populus alba x Populus tremuloides<br />
hybrid poplar Populus x jackii HYB S2 No Yes Yes<br />
= Populus balsamifera x Populus deltoides / Synonym:<br />
Populus x gileadensis<br />
hybrid aspen Populus x rouleauiana HYB SE2 Yes Yes Yes = Populus alba x Populus grandidentata<br />
sweet cherry Prunus avium G? SE4 Yes Yes Yes<br />
cherry plum Prunus cerasifera G? SE1 Yes Yes Yes<br />
sour cherry Prunus cerasus G? SE1 Yes Yes Yes<br />
black cherry Prunus serotina G5 S5 No Yes Yes<br />
Nanking cherry Prunus tomentosa G? SE1 Yes Yes Yes<br />
common pear Pyrus communis G5 SE4 Yes Yes Yes<br />
white oak Quercus alba G5 S5 No Yes Yes<br />
swamp white oak Quercus bicolor G5 S4 rare rare No Yes Yes<br />
bur oak Quercus macrocarpa G5 S5 No Yes Yes<br />
red oak Quercus rubra G5 S5 No Yes Yes Quercus borealis<br />
black oak Quercus velutina G5 S4 rare rare No Yes Yes<br />
black locust Robinia pseudo-acacia G5 SE5 Yes Yes Yes<br />
white willow Salix alba G5 SE4 Yes Yes Yes<br />
peach-leaved willow Salix amygdaloides G5 S5 rare No Yes Yes<br />
crack willow Salix fragilis G? SE5 Yes Yes Yes<br />
black willow Salix nigra G5 S4? rare rare No Yes Yes<br />
sassafras Sassafras albidum G5 S4 rare rare No Yes Yes<br />
European mountain-ash Sorbus aucuparia G5 SE4 Yes Yes Yes Synonym: Pyrus aucuparia<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 30<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
Common Name Scientific Name<br />
Subspecies/<br />
Variety<br />
G-Rank<br />
S-Rank<br />
<strong>Plants</strong> <strong>of</strong> <strong>the</strong> <strong>Credit</strong> <strong>River</strong> <strong>Watershed</strong><br />
eastern white cedar Thuja occidentalis G5 S5 No Yes Yes<br />
basswood Tilia americana G5 S5 No Yes Yes<br />
eastern hemlock Tsuga canadensis G5 S5 No Yes Yes<br />
American elm Ulmus americana G5? S5 No Yes Yes<br />
red elm Ulmus rubra G5 S5 No Yes Yes<br />
rock elm Ulmus thomasii G5 S4? rare rare No Yes Yes<br />
woody vine A woody plant with trailing stems.<br />
COSEWIC<br />
oriental bittersweet Celastrus orbiculatus G? SE2 Yes Yes Yes<br />
climbing bittersweet Celastrus scandens G5 S5 No Yes Yes<br />
purple clematis Clematis occidentalis var. occidentalis G5 S4S5 rare rare No Yes No Historic record - 1891<br />
trailing arbutus Epigaea repens G5 S5 rare rare No Yes Yes<br />
Japanese hops Humulus japonicus G? SE3 Yes Yes Yes<br />
common hops Humulus lupulus var. lupulus G5 SE3? Yes Yes Yes<br />
limber honeysuckle Lonicera dioica G5 S5 No Yes Yes<br />
hairy honeysuckle Lonicera hirsuta G4G5 S5 rare rare No Yes Yes<br />
moonseed Menispermum canadense G5 S4 rare No Yes Yes<br />
common Virginia creeper Par<strong>the</strong>nocissus inserta G5 S5 No Yes Yes Synonym: Par<strong>the</strong>nocissus vitacea<br />
poison-ivy Rhus radicans ssp. negundo G5T? S5 No Yes Yes<br />
Synonyms: Rhus radicans ssp. radicans <strong>of</strong> PCF,<br />
Toxicodendron negundo<br />
nor<strong>the</strong>rn dewberry Rubus flagellaris G5 S4 rare rare No Yes Yes<br />
swamp dewberry Rubus hispidus G5 S4S5 rare rare No Yes No<br />
dwarf raspberry Rubus pubescens G5 S5 No Yes Yes<br />
bristly greenbrier Smilax hispida G5Q S4 No Yes Yes Synonym: Smilax tamnoides<br />
climbing nightshade Solanum dulcamara G? SE5 Yes Yes Yes<br />
periwinkle Vinca minor G? SE5 Yes Yes Yes<br />
summer grape Vitis aestivalis G5 S4 rare rare No Yes Yes<br />
fox grape Vitis labrusca G5 S1 Yes Yes Yes<br />
riverbank grape Vitis riparia G5 S5 No Yes Yes<br />
<strong>Credit</strong> <strong>Valley</strong> <strong>Conservation</strong> Page 31<br />
Prov Status<br />
GTA Status<br />
CVC/Peel Status<br />
Non-Native<br />
Status<br />
Peel Region<br />
CVC<br />
Notes
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