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

Myosurus apetalus C. Gay
bristly mousetail (sedge mousetail)
Ranunculaceae (Buttercup family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #24123)

E-Flora BC Static Map
Distribution of Myosurus apetalus
Click here to view the full interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

SUBTAXA PRESENT IN BC
Myosurus apetalus var. borealis

Species Information

Click on the image below to view an expanded illustration for this species.



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

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

Ecology

Ecological Framework for Myosurus apetalus

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 1710 2178 2431
Slope Gradient (%) 0 38 68
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
81 146 176
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 4
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
4
Modal BEC Zone Class
AT
All BEC Zones (# of stations/zone) species was recorded in: AT(2), CMA(1), ESSF(1)

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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References