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

Anemone lyallii Britton
Lyall's anemone (Little Mountain thimbleweed)
Ranunculaceae (Buttercup family)

Introduction to Vascular Plants

© Dave Ingram  Email the photographer   (Photo ID #19825)

E-Flora BC Static Map
Distribution of Anemone lyallii
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Species Information

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General:
Perennial herb from a horizontal, pale, scaly rhizome; stems slender, erect, 5-30 cm tall, minutely hairy to smooth.
Leaves:
Basal leaves 1 or absent, ascending, thin, palmately compound with 3 leaflets, the leaflets 1-3 (5) cm long, toothed on the upper 1/2 to 2/3, tips pointed, lateral leaflets often lobed, usually smooth; stalks 5-8 cm long.
Flowers:
Inflorescence a solitary, terminal flower; flower stalks smooth or minutely-hairy above; involucral bracts 3, leaf-like, stalked, similar to basal leaves; petals absent; sepals 5 (6-7), petal-like, white, pink, or sometimes blue-tinged, oblong, 3.5-8 (10) mm long, 1.5-3 mm wide, smooth; stamens 10-30 (35).
Fruits:
Achenes, several to many in a spheric head on stalks 1-3 cm long, the achenes elliptic, 3-4 mm long, 1-1.5 mm wide, not winged, white fine-hairy; beaks awl-shaped, about 0.5 mm long, smooth.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist meadows, thickets and forests in the lowland, montane and subalpine zones; infrequent in SW BC, disjunct in WC BC; S to N CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Anemone lyallii

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) 12 431 1500
Slope Gradient (%) 0 12 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
20 229 340
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 6
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
50
Modal BEC Zone Class
CWH
All BEC Zones (# of stations/zone) species was recorded in: CDF(2), CWH(29), ICH(4), MH(2), MS(3), SBS(10)

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

Anemone nemorosa var. lyallii (Britton) Ulbr.
Anemone quinquefolia var. lyallii (Britton) B.L. Rob.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References