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 eastern red cedar Juniperus virginiana G5 S5 rare No Yes Yes European larch Larix decidua G? SE2 Yes Yes Yes tamarack Larix laricina G5 S5 No Yes Yes common apple Malus pumila G5 SE5 Yes Yes Yes Synonyms: Malus domestica, Pyrus malus white mulberry Morus alba G? SE5 Yes Yes Yes hop-hornbeam Ostrya virginiana G5 S5 No Yes Yes Norway spruce Picea abies G? SE3 Yes Yes Yes white spruce Picea glauca G5 S5 No Yes Yes black spruce Picea mariana G5 S5 rare rare No Yes No jack pine Pinus banksiana G5 S5 Yes Yes Yes red pine Pinus resinosa G5 S5 rare rare No Yes Yes Native status of this species is uncertain. white pine Pinus strobus G5 S5 No Yes Yes Scots pine Pinus sylvestris G? SE5 Yes Yes Yes sycamore Platanus occidentalis G5 S4 rare rare No Yes Yes plane-tree Platanus x acerifolia GU SE1 Yes Yes Yes Synonym: Platanus hybrida white poplar Populus alba G5 SE5 Yes Yes Yes balsam poplar Populus balsamifera ssp. balsamifera G5 S5 No Yes Yes eastern cottonwood Populus deltoides ssp. monilifera G5 S5 No Yes Yes large-tooth aspen Populus grandidentata G5 S5 No Yes Yes Lombardy poplar Populus nigra G5 SE4 Yes Yes Yes trembling aspen Populus tremuloides G5 S5 No Yes Yes hybrid poplar Populus x berolinensis HYB SE1 Yes Yes Yes = Populus laurifolia x Populus nigra gray poplar Populus x canescens HYB SE1 Yes Yes Yes = Populus alba x Populus tremula hybrid aspen Populus x heimbergeri HYB SE1 Yes Yes Yes = Populus alba x Populus tremuloides hybrid poplar Populus x jackii HYB S2 No Yes Yes = Populus balsamifera x Populus deltoides / Synonym: Populus x gileadensis hybrid aspen Populus x rouleauiana HYB SE2 Yes Yes Yes = Populus alba x Populus grandidentata sweet cherry Prunus avium G? SE4 Yes Yes Yes cherry plum Prunus cerasifera G? SE1 Yes Yes Yes sour cherry Prunus cerasus G? SE1 Yes Yes Yes black cherry Prunus serotina G5 S5 No Yes Yes Nanking cherry Prunus tomentosa G? SE1 Yes Yes Yes common pear Pyrus communis G5 SE4 Yes Yes Yes white oak Quercus alba G5 S5 No Yes Yes swamp white oak Quercus bicolor G5 S4 rare rare No Yes Yes bur oak Quercus macrocarpa G5 S5 No Yes Yes red oak Quercus rubra G5 S5 No Yes Yes Quercus borealis black oak Quercus velutina G5 S4 rare rare No Yes Yes black locust Robinia pseudo-acacia G5 SE5 Yes Yes Yes white willow Salix alba G5 SE4 Yes Yes Yes peach-leaved willow Salix amygdaloides G5 S5 rare No Yes Yes crack willow Salix fragilis G? SE5 Yes Yes Yes black willow Salix nigra G5 S4? rare rare No Yes Yes sassafras Sassafras albidum G5 S4 rare rare No Yes Yes European mountain-ash Sorbus aucuparia G5 SE4 Yes Yes Yes Synonym: Pyrus aucuparia Credit Valley Conservation Page 30 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 eastern white cedar Thuja occidentalis G5 S5 No Yes Yes basswood Tilia americana G5 S5 No Yes Yes eastern hemlock Tsuga canadensis G5 S5 No Yes Yes American elm Ulmus americana G5? S5 No Yes Yes red elm Ulmus rubra G5 S5 No Yes Yes rock elm Ulmus thomasii G5 S4? rare rare No Yes Yes woody vine A woody plant with trailing stems. COSEWIC oriental bittersweet Celastrus orbiculatus G? SE2 Yes Yes Yes climbing bittersweet Celastrus scandens G5 S5 No Yes Yes purple clematis Clematis occidentalis var. occidentalis G5 S4S5 rare rare No Yes No Historic record - 1891 trailing arbutus Epigaea repens G5 S5 rare rare No Yes Yes Japanese hops Humulus japonicus G? SE3 Yes Yes Yes common hops Humulus lupulus var. lupulus G5 SE3? Yes Yes Yes limber honeysuckle Lonicera dioica G5 S5 No Yes Yes hairy honeysuckle Lonicera hirsuta G4G5 S5 rare rare No Yes Yes moonseed Menispermum canadense G5 S4 rare No Yes Yes common Virginia creeper Parthenocissus inserta G5 S5 No Yes Yes Synonym: Parthenocissus vitacea poison-ivy Rhus radicans ssp. negundo G5T? S5 No Yes Yes Synonyms: Rhus radicans ssp. radicans of PCF, Toxicodendron negundo northern dewberry Rubus flagellaris G5 S4 rare rare No Yes Yes swamp dewberry Rubus hispidus G5 S4S5 rare rare No Yes No dwarf raspberry Rubus pubescens G5 S5 No Yes Yes bristly greenbrier Smilax hispida G5Q S4 No Yes Yes Synonym: Smilax tamnoides climbing nightshade Solanum dulcamara G? SE5 Yes Yes Yes periwinkle Vinca minor G? SE5 Yes Yes Yes summer grape Vitis aestivalis G5 S4 rare rare No Yes Yes fox grape Vitis labrusca G5 S1 Yes Yes Yes riverbank grape Vitis riparia G5 S5 No Yes Yes Credit Valley Conservation Page 31 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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