Flora of North America species comparison

not thickened basally, glabrous.

erect or ascending, often rooting at proximal nodes, glabrous or sparsely pilose.

ovate to lanceolate or narrowly elliptic, 1.5-5.7 × 0.4-2.4 cm, base cordate to acute, margins finely denticulate or entire, apex broadly rounded to acuminate.

bracts linear to lanceolate or oblanceolate.

receptacle glabrous;

sepals 4-5, spreading or reflexed from base, 2-3 × 1.5-3 mm, glabrous or pubescent;

petals 4-6, 2-6 × 1-2 mm;

nectary scales glabrous.

of achenes hemispheric to ovoid, 2-4 × 2-3 mm;

achenes 0.8-1 × 0.8 mm, glabrous;

beak deciduous, leaving stump 0.1-0.2 mm.