Flora of North America species comparison

never tuberous.

erect to decumbent, not rooting nodally, glabrous, not bulbous-based, spheric or ellipsoid bulbils sometimes formed in leaf axils.

prostrate to nearly erect, often rooting nodally, hirsute or glabrous, base not bulbous.

simple and undivided, blades cordate to deltate or semicircular, 1.8-3.7 × 2-4 cm, base cordate, margins entire or crenate, apex rounded or obtuse.

cordate to reniform in outline, 3-foliolate, 3.7-7.5 × 4.5-9.5 cm, leaflets 3-lobed or -parted, ultimate segments elliptic or lance-elliptic, margins toothed or lobulate, apex acute to broadly acute.

receptacle glabrous;

sepals spreading, saccate at extreme base, 4-9 × 3-6 mm, glabrous;

petals yellow, 10-15 × 3-7 mm.

receptacle hirsute;

sepals spreading or reflexed ca. 1 mm above base, 4-6 × 1.5-3 mm, glabrous or hirsute;

petals 5, yellow, 4-6 × 3.5-5 mm.

hemispheric, 4-5 × 6-8 mm;

achenes 2.6-2.8 × 1.8-2 mm, pubescent;

beak absent.

globose or ovoid, 7-11 × 7-10 mm;

achenes 2.4-3 × 2-2.4 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, lanceolate to broadly lanceolate, straight or nearly so, 1-1.2 mm.

roots present.

= 32, 48.