Plants of the Credit River Watershed - Credit Valley Conservation

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Common Name Scientific Name Subspecies/ Variety G-Rank S-Rank Plants of the Credit River Watershed COSEWIC purple-stemmed gentian Gentiana rubricaulis G4? S4 rare rare No Yes Yes fringed gentian Gentianopsis crinita NR S5 rare rare No Yes Yes Synonyms: Gentiana crinita, Gentianella crinita spotted crane's-bill Geranium maculatum G5 S5 No Yes Yes herb-robert Geranium robertianum G? SE5 Yes Yes Yes yellow avens Geum aleppicum G5 S5 No Yes Yes Synonym: Geum strictum white avens Geum canadense G5 S5 No Yes Yes rough avens Geum laciniatum G5 S4 No Yes Yes water avens Geum rivale G5 S5 rare rare No Yes Yes wood avens Geum urbanum G5 SE2 Yes Yes Yes ground-ivy Glechoma hederacea G? SE5 No Yes Yes fragrant cudweed Gnaphalium obtusifolium G5 S5 No Yes Yes low cudweed Gnaphalium uliginosum G5 SE5 Yes Yes Yes viscid cudweed Gnaphalium viscosum G5 S5 rare rare No Yes No Synonym: Gnaphalium macounii downy rattlesnake-plantain Goodyera pubescens G5 S4 rare rare No Yes No dwarf rattlesnake-plantain Goodyera repens G5 S5 rare rare No Yes Yes Historic record - 1889 clammy hedge-hyssop Gratiola neglecta G5 S4 rare rare No Yes No Historic record - 1907 gumweed Grindelia squarrosa G5 SE? Yes Yes Yes baby's-breath Gypsophila paniculata G? SE3 Yes Yes Yes spurred stickseed Hackelia deflexa G5 S5 rare rare No Yes Yes Synonym: Hackelia americana Virginia stickseed Hackelia virginiana G5 S5 No Yes Yes spurred gentian Halenia deflexa ssp. deflexa G5 S5 rare rare No Yes Yes rough pennyroyal Hedeoma hispidum G5 S4 rare rare No Yes No pennyroyal Hedeoma pulegioides G5 S4 rare rare No Yes Yes bluets Hedyotis caerulea G5 S1 rare rare rare No Yes No Synonym: Houstonia caerula / Historic record - 1930 Venus'-pride Hedyotis longifolia G4G5 S4? rare rare No Yes No Synonyms: Hedyotis ciliolata, Houstonia canadensis, Houstonia longifolia Bicknell's frostweed Helianthemum bicknellii G5 S4 rare rare No Yes Yes Canada frostweed Helianthemum canadense G5 S4 rare rare No Yes Yes common sunflower Helianthus annuus ssp. annuus G5 SE? Yes Yes Yes thin-leaved sunflower Helianthus decapetalus G5 S5 rare rare No Yes Yes rough woodland sunflower Helianthus divaricatus G5 S5 No Yes Yes tall wild sunflower Helianthus giganteus G5 S5 No Yes No Historic record - 1907 prairie sunflower Helianthus rigidus ssp. subrhomboideus G5 S? Yes Yes Yes Synonyms: Helianthus laetiflorus of PCF, H. pauciflorus pale-leaved sunflower Helianthus strumosus G5 S5 rare rare No Yes Yes Jeruselam artichoke Helianthus tuberosus G5 SE3 Yes Yes Yes orange day-lily Hemerocallis fulva G? SE5 Yes Yes Yes yellow day-lily Hemerocallis lilioasphodelus G? SE3 Yes Yes Yes cow parsnip Heracleum lanatum G5 S5 rare rare No Yes Yes Synonym: Heracleum maximum dame's rocket Hesperis matronalis G4G5 SE5 Yes Yes Yes flower-of-an-hour Hibiscus trionum G? SE4 Yes Yes No Historic record - 1900 orange hawkweed Hieracium aurantiacum G? SE3 Yes Yes Yes field hawkweed Hieracium caespitosum ssp. caespitosum NR SE5 Yes Yes Yes Synonym: Hieracium pratense Canada hawkweed Hieracium canadense G5 SU rare rare No Yes No Historic record - 1889 common hawkweed Hieracium lachenalii G? SE2? Yes Yes Yes Synonym: Hieracium vulgatum Credit Valley Conservation Page 10 Prov Status GTA Status CVC/Peel Status Non-Native Status Peel Region CVC Notes
Common Name Scientific Name Subspecies/ Variety G-Rank S-Rank Plants of the Credit River Watershed COSEWIC mouse-ear hawkweed Hieracium pilosella G? SE5 Yes Yes Yes glaucous king devil Hieracium piloselloides G? SE5 Yes Yes Yes Synonym: Hieracium florentinum tall king devil Hieracium praealtum G? SE1 Yes Yes No Historic record - 1909 rough hawkweed Hieracium scabrum G5 S4 rare rare No Yes No Historic record - 1889 king devil hawkweed Hieracium x floribundum HYB SE? Yes Yes Yes = Hieracium caespitosum x Hieracium lactucella jagged chickweed Holosteum umbellatum G? SE2 Yes Yes Yes green violet Hybanthus concolor G5 S2 rare rare rare No Yes No Synonym: Cubelium concolor marsh pennywort Hydrocotyle americana G5 S5 No Yes Yes Canada waterleaf Hydrophyllum canadense G5 S4 rare rare No Yes Yes Virginia waterleaf Hydrophyllum virginianum G5 S5 No Yes Yes large St. John's-wort Hypericum majus G5 S5 rare rare No Yes Yes common St. John's-wort Hypericum perforatum G? SE5 Yes Yes Yes spotted St. John's-wort Hypericum punctatum G5 S5 rare rare No Yes Yes hyssop Hyssopus officinalis G? SE2 Yes Yes No Historic record - 1912 spotted jewelweed Impatiens capensis G5 S5 No Yes Yes Synonym: Impatiens biflora Asian jewelweed Impatiens glandulifera G? SE4 Yes Yes Yes pale jewelweed Impatiens pallida G5 S5 rare No Yes Yes English inula Inula britannica G? SE1 Yes Yes Yes elecampane Inula helenium G? SE5 Yes Yes Yes fleur-de-lis Iris germanica G? SE1 Yes Yes Yes yellow flag Iris pseudacorus G? SE3 Yes Yes Yes blue flag Iris versicolor G5 S5 No Yes Yes twinleaf Jeffersonia diphylla G5 S4 rare rare No Yes Yes canker-root Kickxia elatine G? SE1 Yes Yes Yes summer cypress Kochia scoparia G? SE5 Yes Yes Yes tall blue lettuce Lactuca biennis G5 S5 rare rare No Yes Yes Canada lettuce Lactuca canadensis G5 S5 No Yes Yes willow-leaved lettuce Lactuca saligna G? SE1 Yes Yes Yes prickly lettuce Lactuca serriola G? SE5 Yes Yes Yes Synonym: Lactuca scariola henbit Lamium amplexicaule G? SE3 Yes Yes Yes wood nettle Laportea canadensis G5 S5 No Yes Yes bluebur Lappula squarrosa ssp. squarrosa NR S5 Yes Yes Yes Synonym: Lappula echinata nipplewort Lapsana communis G? SE5 Yes Yes Yes everlasting pea Lathyrus latifolius G? SE4 Yes Yes Yes marsh vetchling Lathyrus palustris G5 S5 rare rare No Yes Yes yellow vetchling Lathyrus pratensis G? SE2 Yes Yes Yes tuberous vetchling Lathyrus tuberosus G? SE3 Yes Yes Yes pinweed Lechea intermedia G5 S4 rare rare No Yes Yes rough hawkbit Leontodon taraxacoides ssp. taraxacoides NR SE1 Yes Yes Yes motherwort Leonurus cardiaca ssp. cardiaca G? SE5 Yes Yes Yes field cress Lepidium campestre G5 SE5 Yes Yes Yes common pepper-grass Lepidium densiflorum G? SE5 No Yes Yes Native status is uncertain narrow-leaved pepper-grass Lepidium ruderale G? SE3 Yes Yes Yes garden cress Lepidium sativum G? SE2 Yes Yes No Historic record - 1910 poor-man's pepper-grass Lepidium virginicum G5 S5 rare rare No Yes No Historic record - 1892 Credit Valley Conservation Page 11 Prov Status GTA Status CVC/Peel Status Non-Native Status Peel Region CVC Notes
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Plants of the Credit River Watershed - Credit Valley Conservation

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