- Aedes canadensis_canadensis, Culex canadensis;Culex nivitarsis Coquillet, 1904;Ochlerotatus canadensis
- Boechera canadensis, Sicklepod;Arabis canadensis
- Bryoria trichodes, Alectoria canadensis;Alectoria delicata;Setaria trichodes
- Cardellina canadensis, Canada Warbler;Wilsonia canadensis
- Circaea lutetiana, Enchanters-nightshade;Broadleaf enchanters nightshade;Circaea canadensis;Circaea quadrisulcata
- Conyza canadensis, Canadian Fleabane;Erigeron canadensis L sensu Linnaeus, C 1753;Erigeron pusillus Nutt;Conyza parva Cronquist;Erigeron canadensis L;Canadian horseweed;Erigeron canadensis;Canadian Horseweed;Nipplewort
- Diploschistes muscorum, Diploschistes bryophilus;Diploschistes scruposus var bryophilus;Diploschistes canadensis
- Falcipennis canadensis, Spruce grouse;Dendragapus canadensis;Canachites canadensis
- Lontra canadensis, River otter;Northern River Otter;Mustela;Lutra canadensis
- Macropsis canadensis, Pediopsis canadensis
- Nuttallanthus canadensis, Antirrhinum canadense L;Linaria canadensis L DumCours;Linaria canadensis L DumCours var canadensis;Canada toadflax;Old-field toadflax;Linaria canadensis
- Okanagana canadensis, Canadian cicada;Cicada canadensis
- Pertusaria pustulata, Pertusaria canadensis
- Phanocelia canadensis, Apatania canadensis
- Sambucus nigra, Elder;Sambucus canadensis;Elderberry;Black elderberry;Sambucus cerulea;Sambucus mexicana
- Stenacron interpunctatum, Baetis canadensis Walker, 1853;Baetis interpunctata;Ecdyonurus canadensis;Ecdyonurus frontalis;Ecdyonurus heterotarsalis McDunnough, 1933;Ecdyurus canadensis;Heptagenia canadensis;Heptagenia frontalis Banks, 1910;Heptagenia interpunctata;Palingenia interpunctata;Stenacron areion;Stenacron canadense;Stenacron frontale;Stenacron heterotarsale;Stenonema areion Burks, 1953;Stenonema affine Traver, 1933;Stenonema canadense;Stenonema conjunctum Traver, 1935;Stenonema frontale;Stenonema heterotarsale;Stenonema interpunctatum;Stenonema majus Traver, 1935;Stenonema ohioense Traver, 1935;Stenonema proximum Traver, 1935;Cahill;Ginger quill;Light Cahill;Pale olive Cahill quill;Pale gray fox quill;Little yellow fox
- Uroleucon canadensis, Dactynotus canadensis
- Vulpicida canadensis, Cetraria canadensis;Tuckermannopsis canadensis
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