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COSEWIC Status Reports

  • COSEWIC assessment and status report on the Bear’s-foot Sanicle Sanicula arctopoides in Canada (2016)
    Bear’s-foot Sanicle is a tap-rooted, low-growing, herbaceous perennial wildflower. Its basal leaves, which are deeply lobed and sharply toothed, form a compact rosette. The inflorescences are compact with many bright yellow small flowers that produce fruit with hooked bristles. Bear’s-foot Sanicle is one of over 50 nationally rare species that are restricted (in Canada) to Garry Oak and associated ecosystems in southern Vancouver Island and the a ...
  • COSEWIC assessment and status report on the Colicroot Aletris farinosa in Canada (2016)
    Colicroot (Aletris farinosa) is a herbaceous perennial in the Bog Asphodel Family (Nartheciaceae). It has a basal rosette of yellowy-green, lance-shaped leaves. In early summer, it produces an upright flowering stalk about 40 – 100 cm tall, with a spike of small, white flowers with a mealy texture. After flowering, the dried petals remain on the fruit capsules. Colicroot has been used to treat menstrual and uterine problems and contains active ch ...
  • COSEWIC Assessment and Status Report on the Common Hoptree Ptelea trifoliata in Canada (2016)
    Common Hoptree (Ptelea trifoliata) is a small tree in the rue family (Rutaceae). It has alternate trifoliate leaves which are aromatic; flowers bloom in early summer; they are borne in terminal clusters, cream coloured with 4-5 petals. Fruit, which matures in late summer, is dry, disk-shaped, and bears 2-3 seeds. Common Hoptree is often a component of the stabilizing vegetation along sections of the Lake Erie shoreline. It has had a long history ...
  • COSEWIC assessment and update status report on the common hoptree Ptelea trifoliata in Canada (2016)
    Common Hoptree (Ptelea trifoliata) is a small tree in the rue family (Rutaceae). It has alternate trifoliate leaves which are aromatic; flowers bloom in early summer; they are borne in terminal clusters, cream coloured with 4-5 petals. Fruit, which matures in late summer, is dry, disk-shaped, and bears 2-3 seeds. Common Hoptree is often a component of the stabilizing vegetation along sections of the Lake Erie shoreline. It has had a long history ...
  • COSEWIC assessment and status report on the flooded jellyskin Leptogium rivulare in Canada (2016)
    The Flooded Jellyskin (Leptogium rivulare) is a small, grey or bluish-grey (when dry) leafy lichen, the surface of which becomes jelly-like when wet. Thalli are up to 4 cm in diameter and on the upper surface there are numerous reddish-brown fruiting bodies (apothecia). The Flooded Jellyskin is a "cyanolichen," in which the photosynthetic partner is a cyanobacterium in the genus Nostoc. Cyanolichens have been shown to contribut
  • COSEWIC assessment and status report on the Giant Helleborine Epipactis gigantea in Canada (2016)
    Giant Helleborine is a perennial, leafy-stemmed orchid up to 1 m tall that spreads from short rhizomes. Flowering stems have 3-15, 2-3 cm wide flowers that are coppery-green to reddish with brownish to purplish veins. Giant Helleborine is one of Canada’s most distinctive showy orchids and has been grown as an ornamental.
  • COSEWIC Assessment and Status Report on the Gray Fox Urocyon cinereoargenteus in Canada (2016)
    The Gray Fox (Urocyon cinereoargenteus) has a typical fox-like appearance but the pelage is a grizzled grey colour, with reddish regions on the neck, sides, and legs. There is a prominent black stripe running the length of the back down to the tip of the tail. The Gray Fox is significant in the phylogeny of canids because it is considered to be the basal member of the Canid family. It is also the most arboreal of canids, and can partially rotate ...
  • COSEWIC assessment and update status report on the grey fox Urocyon cinereoargenteus in Canada (2016)
    The Gray Fox (Urocyon cinereoargenteus) has a typical fox-like appearance but the pelage is a grizzled grey colour, with reddish regions on the neck, sides, and legs. There is a prominent black stripe running the length of the back down to the tip of the tail. The Gray Fox is significant in the phylogeny of canids because it is considered to be the basal member of the Canid family. It is also the most arboreal of canids, and can partially rotate ...
  • COSEWIC assessment and status report on the Hoptree Borer Prays atomocella in Canada (2016)
    The Hoptree Borer is a small moth (i.e., 17-20 mm wingspan), and the only species of the family Praydidae native to Canada. Despite its small size, the pattern and colour are distinctive, with a black-spotted, pure white forewing and a pinkish rust-brown hindwing and abdomen. Larvae are up to 20 mm long and pale green to yellowish with indistinct lateral lines. The Hoptree Borer is one of three known insect herbivores that specialize on Common H ...
  • COSEWIC Assessment and Status Report on the Lake Erie Watersnake Nerodia sipedon insularum in Canada (2016)
    Lake Erie Watersnake, Nerodia sipedon insularum, is one of two subspecies of the Common Watersnake, Nerodia sipedon (family Colubridae), found in Canada. Lake Erie Watersnakes range in appearance from being regularly patterned with dark dorsal and lateral blotches to a uniform grey (often a drab greenish or brownish) without pattern. The colour of the ventral scales is generally white or yellowish white, often with dark speckli
  • COSEWIC assessment and update status report on the Lake Erie watersnake Nerodia sipedon insularum in Canada (2016)
    Lake Erie Watersnake, Nerodia sipedon insularum, is one of two subspecies of the Common Watersnake, Nerodia sipedon (family Colubridae), found in Canada. Lake Erie Watersnakes range in appearance from being regularly patterned with dark dorsal and lateral blotches to a uniform grey (often a drab greenish or brownish) without pattern. The colour of the ventral scales is generally white or yellowish white, often with dark speckli
  • COSEWIC assessment and status report on the Lake Huron Grasshopper Trimerotropis huroniana in Canada (2016)
    Lake Huron Grasshopper is silver-grey to brownish with variable speckles and colours to blend in with its sandy habitat. In flight, the hind wings are exposed to show clear or pale yellow areas at the base, a black band across the middle, and clear or smoky tips. The females (29 to 40 mm) are larger than the males (24 to 30 mm). It is one of a few species endemic to the Laurentian Great Lakes area.
  • COSEWIC assessment and status report on the Little Quarry Lake Benthic Threespine Stickleback and the Little Quarry Lake Limnetic Threespine Stickleback Gasterosteus aculeatus in Canada (2016)
    Little Quarry Lake Benthic and Limnetic Threespine Sticklebacks are one of three extant species pairs of Threespine Stickleback that live in sympatry. In each pair, Benthics eat mainly benthic invertebrates in the littoral zone while Limnetics primarily feed on plankton in open water. Each has traits adapted to their feeding lifestyle; for example, Benthics have a greater overall body depth, shorter dorsal and anal fins, a smaller eye, and a shor ...
  • COSEWIC Assessment and Status Report on the on the Louisiana Waterthrush Parkesia motacilla in Canada (2016)
    The Louisiana Waterthrush, Seiuros motacilla, is a relatively large, drab, thrush-like member of the Wood Warbler family (Parulidae). Males and females are identical in external appearance. The upper parts are dull brown. The lower parts are cream-coloured, with dark streaking on the breast and flanks, which fade out in the undertail coverts. A bold, broad, white supercilium extends to the nape. The legs are bubble-gum pink, and the bill is rathe ...
  • COSEWIC assessment and update status report on the Louisiana Waterthrush Seiurus motacilla in Canada (2016)
    The Louisiana Waterthrush, Seiuros motacilla, is a relatively large, drab, thrush-like member of the Wood Warbler family (Parulidae). Males and females are identical in external appearance. The upper parts are dull brown. The lower parts are cream-coloured, with dark streaking on the breast and flanks, which fade out in the undertail coverts. A bold, broad, white supercilium extends to the nape. The legs are bubble-gum pink, and the bill is rathe ...

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