Anemone drummondii var. drummondii
Anemone drummondii var. lithophila

General:
Perennial herb from a branching woody stem-base; stems erect, 10-30 cm tall, stiff-hairy.

Leaves:
Basal, 5 to 15, ascending, 3- or 4-times 3-parted, sometimes irregularly so, the ultimate segments linear, 1-2.5 mm wide, long-hairy; stalks 2-10 cm long.

Flowers:
Inflorescence 1- (2-) flowered, terminal; flower stalks long soft-hairy; involucral bracts 3 (-4), 1-tiered, leaf-like, similar to basal leaves but short-stalked; petals absent; sepals usually 6 to 9, petal-like, all white or white tinged with blue on outside, narrowly egg-shaped, 8-20 mm long, 6-10 mm wide, hairy on outside, smooth inside; stamens 80-100, whitish.

Fruits:
Achenes, numerous in a spheric head, rarely cylindric, on stalks 3-10 cm long, the achenes egg-shaped, 2-4 mm long, 1-1.5 mm wide, not winged, silky-hairy; beaks straight, 2-4 (6) mm long, smooth.

Notes:
Two varieties occur in BC:

1. Ultimate leaf segments mostly 1.5-2.5 mm wide; beaks 2-2.5 mm long................. var. lithophila (Rydb.) C.L. Hitchc.

1. Ultimate leaf segments mostly 1-1.5(2) mm wide; beaks mostly 2-4 (6) mm long................. var. drummondii

Source:  The Illustrated Flora of British Columbia