Flora of North America species comparison

thickened basally, glabrous.

erect or ascending, never rooting nodally, glabrous.

glabrous.

basal leaf blades with base obtuse to cordate;

proximal cauline leaf blades semicircular to cordate or ovate, 1.2-5.1 × 1.5-2.9 cm, base cordate to broadly obtuse, margins entire or crenulate, apex broadly acute to rounded.

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

bracts narrowly elliptic to ovate or lanceolate.

receptacle glabrous or hispidulous;

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

petals 5-6, 4-9 × 2-5 mm;

nectary scales 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.

hemispheric, 3 × 4-5 mm;

achenes 1.6-1.8 × 1.2 mm, glabrous;

beak lance-subulate, straight, 0.2-1 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 (Europe).