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

General:
Perennial herb from slender fibrous roots; stems several, sometimes erect, usually 1 or more creeping and freely rooting at nodes, to 100 cm long, often slightly hollow; plants hairy.

Leaves:
Basal egg-shaped to triangular, 3-parted, 1-8.5 cm long, 1.5-10 cm wide, the leaflets lobed, parted, or parted and again lobed, often with pale spot at the base of each sinus, the ultimate segments egg-shaped to elliptic or sometimes narrowly oblong, toothed, tips blunt to sharp-pointed, the stalks to 40 cm long; stem leaves alternate, the lower long-stalked, transitional to the simple to 5-parted bracts.

Flowers:
Inflorescence of few-flowered cymes terminal on erect stem and branches; flower stalks to 15 cm long; receptacle long stiff-hairy or rarely smooth; petals usually 5, sometimes 6 to 9 (to many), distinct, yellow, broadly egg-shaped to nearly circular, 6-18 mm long, 5-12 mm wide, nectary on upper surface, the nectary scale smooth, 1-1.5 mm long; sepals 5, spreading or bent back from base, early deciduous, greenish, 4-7 mm long, 1.5-3 mm wide, long stiff-hairy or sometimes smooth; stamens 30- 80; pistils (10) 20-50.

Fruits:
Achenes, several to many in a globe- to egg-shaped head 5-10 mm long, 5-8 mm wide, the achenes egg-shaped to irregularly circular, 2.6-3.2 mm long, 2-2.8 mm wide, smooth, strongly flattened, margins prominent, somewhat keeled; beaks persistent, lanceolate, 0.8-1.2 mm long, curved.