Flora of North America species comparison

slender, 0.2-0.8 mm thick.

erect or ascending, 5-19 cm, sparsely pilose, each with 1-4 flowers.

erect from short caudices, not rooting nodally, glabrous, not bulbous-based.

basal leaf blades ovate to semicircular in outline, ternately or pinnately 2x-compound, 2.4-8.2 × 2-8.5 cm, leaflets parted and again lobed, ultimate segments elliptic to linear, margins entire (or occasionally a lobe reduced to tooth), apex acuminate to rounded.

persistent, blades reniform or semicircular, undivided or some 3-parted, 1.4-2.1 × 1.7-2.8 cm, base cordate or truncate, margins crenate with more than 5 crenae, apex rounded.

pedicels pilose, sometimes sparsely so;

receptacle hispid;

sepals 4-6 × 2-3 mm, abaxially pilose, hairs colorless;

petals 5, 4-5 × 2-4 mm;

nectary scale glabrous.

receptacle glabrous;

sepals spreading or reflexed from base, 3-6 × 1-3 mm, glabrous;

petals (0-)5-6, yellow, 3-8 × 1-3 mm.

ovoid to cylindric, 4-7 × 4-6 mm;

achenes 1.6-1.8 × 1.2-1.4 mm, glabrous;

beak lance-subulate, curved, 0.4-0.6 mm.

hemispheric to globose, 4-5 × 6-7 mm;

achenes 2.2-3.6 × 1.2-1.8 mm, glabrous;

beak filiform, strongly reflexed from base, 0.8-1.5 mm, brittle, often broken.

roots absent.

= 32.

= 32.