Flora of North America species comparison

dimorphic, some filiform, 0.2-0.6 mm thick and some with tuberous bases 1-2 mm thick.

slender, 0.3-0.8 mm thick.

erect, 11-40 cm, villous, each with 8-35 flowers.

erect or decumbent, 1-12 cm, sparsely pilose, each with 1-3 flowers.

persistent, blades ovate, orbiculate, or transversely elliptic, outer blades undivided, inner 3-parted or 3-foliolate, 1-3.3 × 1-3 cm, base truncate to broadly obtuse or sometimes weakly cordate, margins crenate, apex rounded-obtuse.

persistent, blades broadly obovate to transversely elliptic, 3-lobed or -parted, 0.9-3 × 0.8-3.4 cm, segments undivided or again lobed, base obtuse, margins entire, apices of segments rounded to rounded-obtuse.

pedicels glabrous or villous;

receptacle glabrous;

sepals 2-4 × 1-1.5 mm, abaxially glabrous or pubescent, hairs colorless;

petals 5, 1.5-3.5 × 0.5-1.5 mm;

nectary scale glabrous.

pedicels pilose;

receptacle pilose;

sepals 4-7 × 2-3 mm, abaxially pilose, hairs colorless;

petals 5, 5-8 × 3-4 mm;

nectary scale glabrous.

globose to cylindric, 3-7 × 2-4 mm;

achenes 1.1-1.5 × 1-1.3 mm, glabrous;

beak subulate, straight or curved, 0.2-0.3 mm.

cylindric, 6-9 × 4 mm;

achenes 1.2-1.4 × 0.8-1 mm, glabrous;

beak lance-subulate, straight or curved, 0.4-0.6 mm.

= 16.

= 64.