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

Introduction to Vascular Plants

Photograph

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Map

E-Flora BC Static Map

Distribution of Myosurus apetalus var. borealis
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Species Information

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.

SourceThe Illustrated Flora of British Columbia

Illustration

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USDA Species Characteristics

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

Habitat and Range

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

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Myosurus aristatus auct. non Benth.
Myosurus aristatus subsp. aristatus
Myosurus minimus var. aristatus auct. non (Benth.) B. Boivin