Flora of North America species comparison

slender or fusiform-thickened basally, glabrous.

not or scarcely fusiform-thickened proximally.

erect or ascending, not rooting nodally, glabrous or hirsute.

13-30 cm × 1-3 mm, glabrous.

basal leaf blades with base acute;

proximal cauline leaf blades lanceolate, ovate, or elliptic, 1.8-14.1 × 0.7-2.9 cm, base acuminate to rounded, margins entire or serrulate, apex obtuse to acuminate.

blade lanceolate (usually narrowly so), 3.4-9.5 × 0.8-1.5 cm, base acute to acuminate (or sometimes obtuse), margins entire.

bracts lanceolate.

receptacle glabrous;

sepals 5, spreading or reflexed from base, 2-6 × 1-4 mm, glabrous or hirsute;

petals 5-12, 5-14 × 2-8 mm;

nectary scales glabrous.

petals 5-6, 6-8 × 3-5 mm.

hemispheric to globose, 3-7 × 4-8 mm;

achenes 1.6-2.8 × 1.2-2 mm, glabrous or rarely hispid;

beak lance-subulate, straight or weakly curved, 0.4-1.2 mm.