Flora of North America species comparison

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

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

glabrous.

blade reniform, 0.4-1 × 0.6-1.7 cm, margins shallowly crenate-lobulate, segments rounded.

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.

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.

receptacle glabrous;

sepals recurved, 1.5-2 × 1-1.5 mm, glabrous;

petals 5, 2-4 × 1-1.5 mm;

style 0.1 mm.

recurved.

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.

globose or depressed-globose, 3-4 × 3-4 mm;

achenes 1.2-1.6 × 1-1.2 mm, glabrous;

beak deciduous, sometimes leaving stub to 0.1 mm.

= 16.

= 16 (Europe).