Flora of North America species comparison

not thickened basally, canescent.

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

erect or ascending, not rooting nodally, glabrous.

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.

narrowly elliptic to linear, 2.5-4.8 × 0.2-0.9 cm, base narrowly acuminate, margins entire, apex acute to acuminate.

bracts lanceolate to linear.

receptacle glabrous;

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

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

receptacle glabrous;

sepals 5, spreading or reflexed from base, 3-5 × 1-2 mm, glabrous;

petals 5, 4-6 × 1-2 mm;

nectary scales 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.

hemispheric, 2-4 × 3-5 mm;

achenes 1-1.4 × 0.8 mm, glabrous;

beak subulate, straight, 0.2-0.4 mm.

roots absent.

= 32.