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| Myosurus apetalus var. montanus (Campbell) Whitemore | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||||||||||||||||
| Family: | Ranunculaceae | ||||||||||||||||
| Genus: | Myosurus | ||||||||||||||||
| Species Synonyms: | Myosurus aristatus ssp. montanus
(Campbell) D.E. Stone ex Mason Myosurus minimus ssp. montanus Campbell |
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| Common Names: | tiny mousetail mountain mousetail awned mousetail |
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| DISTRIBUTION | |||||||||||||||||
| Canada: | southern British Columbia – southern Alberta – southern Saskatchewan – southern Manitoba – southern Ontario | ||||||||||||||||
| Saskatchewan: | southern Saskatchewan; Cypress Hills – Rockglen – Saskatoon | ||||||||||||||||
| Ecoregion: | Cypress Upland, Mixed Grassland, Moist Mixed Grassland | ||||||||||||||||
| HABITAT | |||||||||||||||||
| Saskatchewan: | slough margins, mudflats, and prairie and cultivated field depressions | ||||||||||||||||
| Associated species: | oakleaf goosefoot, povertyweed, purslane speedwell, toad rush | ||||||||||||||||
| RARITY STATUS | |||||||||||||||||
| Provincial
Status According to Harms (2003): |
Vulnerable |
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| Nature Conservancy Status: | G5 |
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| Saskatchewan
Species at Risk Status: |
None |
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| COSEWIC Status: | None |
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| Tiny mousetail is vulnerable but is apparently secure in Saskatchewan. It is only somewhat regionally restricted in the province. No immediate threats are known but may occur in the future. | |||||||||||||||||
| SPECIES DESCRIPTION | |||||||||||||||||
| Height: | 1.5 – 12 cm | ||||||||||||||||
| Roots: | fibrous | ||||||||||||||||
| Stems: | annual, leafless | ||||||||||||||||
| Leaves: | basal, blades 1 – 8 cm long, linear to narrowly inversely lance-shaped, margin entire | ||||||||||||||||
| Inflorescence: | flowers solitary; in fruit creating heads of achenes (numerous carpels on receptacle), heads elongated, 5 – 10 mm long, 1.5 – 2 mm wide, appearing roughened due to projecting fruit beaks, extending beyond leaves | ||||||||||||||||
| Flowers: | sepals 5, faintly 3-veined, margin dry and membranous, spurred at the base; petals 5 or fewer, 1 – 3 mm long, claw 1 – 2 times as long as blade, white, nectariferous at tip; stamens 5 – 10; carpels numerous on receptacle | ||||||||||||||||
| Fruits: | one-seeded, 1 – 2 mm long, beak diverging from outer face of fruit | ||||||||||||||||
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