E-Flora BC: Electronic Atlas of the Flora of British Columbia

Myosurus apetalus var. borealis C. Gay Whittemore
bristly mousetail
Ranunculaceae (Buttercup family)

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Myosurus apetalus var. borealis
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Species Information

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General:
Annual herb from taproot; stems erect, 1-12 cm tall.
Leaves:
In basal clump, simple, linear or narrowly oblanceolate, 0.9-4 cm long, entire.
Flowers:
Inflorescences of solitary, terminal flowers; flower shoots 1-12 cm long, shorter than leaves when flowering, but longer in fruit; bracts none; petals none to 5, distinct, white, linear to narrowly spoon-shaped, 1-2.5 mm long, long-clawed, the claw 1- to 2-times as long as blade, nectary on upper surface; sepals (3) 5 (-8), green with wide membranous margins, narrowly oblong, 1.5-2.5 mm long, spurred, the blades slightly longer than spurs, usually 1-veined; stamens usually 5; pistils 20-50 (90).
Fruits:
Achenes, 20 to 50 or more in a spike 4-10 mm long, 1.5-2 mm wide; beaks diverging, 0.6-1.4 mm long; seeds 1.5 times as long as wide.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Mid Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source:  The USDA

Habitat / Range

Vernally moist meadows, streambanks and pools in the steppe zone; rare in SC BC; S to MT, WY, UT, NV and CA.

Source: The Illustrated Flora of British Columbia

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Myosurus aristatus auct. non Benth.
Myosurus aristatus subsp. aristatus
Myosurus minimus var. aristatus auct. non (Benth.) B. Boivin

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References