Flora of North America species comparison

slender, 0.5-1 mm thick.

creeping or floating, rooting nodally, glabrous, not bulbous-based.

erect or decumbent from short caudices, 3-22 cm, glabrous, each with 1-5 flowers.

persistent, blades cordate or reniform, 3-parted, 0.5-1.8 × 0.8-3 cm, segments again lobed, base truncate or nearly cordate, apices of segments rounded.

linear to obovate, undivided or 3-lobed, 1.5-3.6 × 0.3-2 cm, lobes lanceolate or elliptic, margins entire, apex rounded to acuminate.

receptacle glabrous;

sepals spreading, 6-10 × 4-7 mm, glabrous;

petals 7-11, white or pink, 8-13 × 3-6 mm.

pedicels pubescent or glabrous;

receptacle glabrous or pubescent;

sepals 3-5 × 1-4 mm, pubescent or glabrous;

petals 5, 3-6 × 1-5 mm;

nectary scale glabrous.

globose or hemispheric, 5-12 × 9-15 mm;

achenes 4.2-5.2 × 2.4-3.2 mm, glabrous;

beak persistent, lanceolate, straight or curved, 1-1.2 mm.

cylindric to ovoid-cylindric, 4-13 × 4-6 mm;

achenes 1.2-2.4 × 0.8-2 mm, glabrous;

beak subulate, curved or hooked, 0.4-0.8 mm.

roots absent.

= 32.

= 16.