Flora of North America species comparison

always both filiform and tuberous on same stem.

erect or ascending, never rooting nodally, strigose or spreading-strigose, base not bulbous.

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

blades ovate to broadly ovate in outline, 3-5-foliolate, 2.1-4.7 × 1.9-4.5 cm, leaflets undivided or 1x-lobed or -parted, ultimate segments oblanceolate or obovate, margins entire or with few teeth, apex rounded-acute to rounded-obtuse.

blades circular to ovate or obovate, undivided, 0.8-2.6 × 0.6-1.4 cm, margins entire or serrulate, apex obtuse or rounded.

receptacle hispid or glabrous;

sepals spreading or sometimes reflexed from base, 5-7 × 2-3 mm, hispid or glabrous;

petals 5(-7), yellow, 8-14 × 3-6 mm.

receptacle glabrous;

sepals spreading, 4-8 × 2-4 mm, glabrous;

petals yellow, 5-12 × 1-3 mm.

globose or ovoid, 5-9 × 5-8 mm;

achenes 2-2.8 × 1.8-2.2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, filiform, straight, 1.2-2.8 mm.

depressed-hemispheric or -conic, 3-4 × 5 mm;

achenes 2-2.6 × 1-1.4 mm, glabrous;

beak persistent, lanceolate, straight, 0.8-1.2 mm.

roots absent.

= 32.

= 16.