Flora of North America species comparison

slender, 0.4-1.6 mm thick.

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

erect or decumbent from short or long caudices, 4-27 cm, glabrous, each with 1-3 flowers.

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.

persistent, blades reniform or cordate to obovate or broadly oblong, lobed or 3-parted, 0.5-4.1 × 0.8-3.7 cm, segments again 1(-2)×-lobed, base obtuse to cordate, apices of segments rounded in outline.

receptacle glabrous;

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

petals yellow, 10-15 × 3-7 mm.

pedicels glabrous;

receptacle glabrous or sparsely pilose;

sepals 4-8 × 2-6 mm, abaxially glabrous or pilose;

petals 5-8, 6-16 × 4-16 mm;

nectary scale glabrous.

hemispheric, 4-5 × 6-8 mm;

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

beak absent.

cylindric or ovoid, 5-10 × 4-7 mm;

achenes 1.4-2 × 1-1.6 mm, glabrous or sparsely pubescent;

beak lanceolate or subulate, straight (sometimes curved when immature), 0.6-1.8 mm.

roots present.