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 shining willow Salix lucida G5 S5 rare No Yes Yes bog willow Salix pedicellaris G4 S5 rare rare No Yes No bay-leaved willow Salix pentandra G? SE2 Yes Yes Yes slender willow Salix petiolaris G4 S5 No Yes Yes Synonym: Salix gracilis basket willow Salix purpurea G5 SE4 Yes Yes Yes autumn willow Salix serissima G4 S5 rare rare No Yes Yes common elderberry Sambucus canadensis G5 S5 No Yes Yes red-berried elderberry Sambucus racemosa ssp. pubens G5T4T5 S5 No Yes Yes Synonym: Sambucus pubens Canada soapberry Shepherdia canadensis G5 S5 rare rare No Yes Yes false spiraea Sorbaria sorbifolia G5 SE4 Yes Yes Yes common meadowsweet Spiraea alba G5 S5 No Yes Yes Synonym: Spiraea latifolia Asian meadowsweet Spiraea chamaedryfolia G? SE1 Yes Yes Yes Japanese meadowsweet Spiraea japonica G5 SE1 Yes Yes Yes willow-leaved meadowsweet Spiraea salicifolia G? SE1 Yes Yes Yes hardhack Spiraea tomentosa G5 S4S5 rare rare No Yes No bladdernut Staphylea trifolia G5 S4 rare rare No Yes Yes snowberry Symphoricarpos albus G5 S5 rare No Yes Yes wolfberry Symphoricarpos occidentalis G5 SE3 Yes Yes Yes lilac Syringa vulgaris G? SE5 Yes Yes Yes American yew Taxus canadensis G5 S5 No Yes Yes lowbush blueberry Vaccinium angustifolium G5 S5 No Yes Yes highbush blueberry Vaccinium corymbosum G5 S4 rare rare No Yes Yes large cranberry Vaccinium macrocarpon G4 S4S5 rare rare No Yes Yes velvet-leaf blueberry Vaccinium myrtilloides G5 S5 rare rare No Yes Yes small cranberry Vaccinium oxycoccos G5 S5 rare rare No Yes Yes dryland blueberry Vaccinium pallidum G5 S4 rare rare No Yes Yes Synonym: Vaccinium vacillans maple-leaved viburnum Viburnum acerifolium G5 S5 No Yes Yes wild-raisin Viburnum cassinoides G5 S5 rare rare No Yes No hobblebush Viburnum lantanoides G5 S5 rare rare No Yes Yes Synonym: Viburnum alnifolium guelder-rose Viburnum opulus G5 SE4 Yes Yes Yes downy arrow-wood Viburnum rafinesquianum G5 S5 rare rare No Yes Yes highbush cranberry Viburnum trilobum G5 S5 No Yes Yes prickly-ash Zanthoxylum americanum G5 S5 rare rare No Yes Yes small trees A single stemmed woody plant reaching less than 2m in height. mountain maple Acer spicatum G5 S5 No Yes Yes speckled alder Alnus incana ssp. rugosa G5T5 S5 No Yes Yes Synonym: Alnus rugosa downy juneberry Amelanchier arborea G5 S5 No Yes Yes smooth juneberry Amelanchier laevis G4G5Q S5 No Yes Yes blue-beech Carpinus caroliniana ssp. virginiana G5 S5 No Yes Yes alternate-leaved dogwood Cornus alternifolia G5 S5 No Yes Yes hawthorn Crataegus calpodendron G5 S4S5 rare rare No Yes Yes hawthorn Crataegus corusca G3G5 S2S3 rare rare No Yes Yes hawthorn Crataegus holmesiana G5 S4S5 rare No Yes Yes hawthorn Crataegus macracantha NR S5 No Yes Yes hawthorn Crataegus macrosperma G5 S5 rare rare No Yes Yes Credit Valley Conservation Page 28 COSEWIC 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 English hawthorn Crataegus monogyna G5 SE5 Yes Yes Yes hawthorn Crataegus pedicellata G5 S4 No Yes Yes hawthorn Crataegus pringlei G5 S5 rare rare No Yes Yes hawthorn Crataegus pruinosa G5 S4? rare rare No Yes Yes hawthorn Crataegus punctata G5 S5 No Yes Yes hawthorn Crataegus scabrida G3G4 S4 rare rare rare No Yes Yes hawthorn Crataegus schuettei G3G4 S4 rare rare No Yes Yes hawthorn Crataegus submollis G5 S4S5 rare rare No Yes No hawthorn Crataegus succulenta G5 S4S5 rare rare No Yes Yes Russian-olive Elaeagnus angustifolia G? SE3 Yes Yes Yes winged spindle-tree Euonymus alata Yes Yes No spindle tree Euonymus europaea G? SE2 Yes Yes Yes Siberian crabapple Malus baccata G? SE1 Yes Yes Yes Synonym: Pyrus baccata mountain-holly Nemopanthus mucronatus G5 S5 rare rare No Yes Yes Canada plum Prunus nigra G4G5 S4 No Yes Yes pin cherry Prunus pensylvanica G5 S5 No Yes Yes American mountain-ash Sorbus americana G5 S5 rare rare No Yes Yes Synonym: Pyrus americana Siberian elm Ulmus pumila G? SE3 Yes Yes Yes wayfaring tree Viburnum lantana G? SE2 Yes Yes Yes nannyberry Viburnum lentago G5 S5 No Yes Yes trees A woody plant usually with a single stem which can reach heights of several metres. balsam fir Abies balsamea G5 S5 No Yes Yes Manitoba maple Acer negundo G5 S5 No Yes Yes Norway maple Acer platanoides G? SE5 Yes Yes Yes red maple Acer rubrum G5 S5 No Yes Yes silver maple Acer saccharinum G5 S5 No Yes Yes black maple Acer saccharum ssp. nigrum G5Q S4? No Yes Yes Synonym: Acer nigrum sugar maple Acer saccharum ssp. saccharum G5T? S5 No Yes Yes horse-chestnut Aesculus hippocastanum G? SE2 Yes Yes Yes tree-of-heaven Ailanthus altissima G? SE5 Yes Yes Yes yellow birch Betula alleghaniensis G5 S5 No Yes Yes Synonym: Betula lutea white birch Betula papyrifera G5 S5 No Yes Yes European weeping birch Betula pendula G? SE4 Yes Yes Yes dwarf birch Betula pumila G5 S5 rare rare No Yes Yes Synonym: Betula glandulifera bitternut hickory Carya cordiformis G5 S5 No Yes Yes shagbark hickory Carya ovata var. ovata G5 S5 No Yes Yes northern catalpa Catalpa speciosa GU SE1 Yes Yes Yes American beech Fagus grandifolia G5 S5 No Yes Yes white ash Fraxinus americana G5 S5 No Yes Yes European ash Fraxinus excelsior G? SE2 Yes Yes Yes black ash Fraxinus nigra G5 S5 No Yes Yes red ash Fraxinus pennsylvanica G5 S5 No Yes Yes honey locust Gleditsia triacanthos G5 S2 Yes Yes Yes butternut Juglans cinerea G3G4 S3? No Yes Yes black walnut Juglans nigra G5 S4 No Yes Yes Credit Valley Conservation Page 29 COSEWIC Prov Status GTA Status CVC/Peel Status Non-Native Status Peel Region CVC Notes
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Page 37: 21. Lindsay, K.M. 1984. Life Scienc

Plants of the Credit River Watershed - Credit Valley Conservation

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