Flora of North America species comparison

never tuberous.

slender, 0.7-1.3 mm thick.

erect, never rooting nodally, hispid, base not bulbous.

erect from short caudices, 6-15 cm, glabrous or sometimes pilose, each with 1-2 flowers.

blades broadly cordate in outline, 3-foliolate, 1.6-7 × 3-9 cm, leaflets cleft, usually deeply so, ultimate segments narrowly elliptic, margins toothed, apex acute.

persistent, blades narrowly elliptic to lanceolate or oblanceolate, undivided, 1.5-4.5 × 0.5-1.1(-2.8) cm, base acute or long-attenuate, margins entire except for apex, apex truncate or rounded and 3(-5)-toothed.

receptacle hirsute;

sepals reflexed ca. 1 mm above base, 3-5 × 1.5-2 mm, ± hispid;

petals 5, yellow, 2-4 × 1-2.5 mm.

pedicels glabrous or brown-pilose;

receptacle glabrous;

sepals 6-12 × 2.5-8 mm, abaxially densely brown-pilose;

petals 5(-8), 10-19 × 6-17 mm;

nectary scale glabrous.

cylindric, 9-12 × 5-7 mm;

achenes 1.8-2.8 × 1.6-2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, broadly lanceolate or nearly deltate, straight or nearly so, 0.6-0.8 mm.

ovoid or cylindric, 5-10 × 4-5.5 mm;

achenes 1.5-1.7 × 1.2-1.3 mm, glabrous;

beak slender, straight or recurved, 0.5-1.5(-2.2) mm.

= 16.