Flora of North America species comparison

slender, 0.2-0.8 mm thick.

erect or nearly erect, 10-50 cm, glabrous, each with 9-40 flowers.

prostrate, glabrous, rooting nodally.

basal leaves absent, cauline leaf blades reniform to broadly flabellate, deeply 3-lobed or 3-parted, 0.3-1.2 × 0.5-2.1 cm, base obtuse to cordate, lobes undivided or lateral lobes cleft, terminal segment entire or distally crenulate, apex rounded.

persistent, blades reniform, outer undivided, inner 3-lobed to 3-foliolate, 1-3.5 × 1.5-4.5 cm, base truncate or cordate, margins crenate, apex rounded or obtuse.

pedicels pubescent or glabrous;

receptacle sparsely pilose;

sepals 2-3 × 1-2 mm, abaxially sparsely hispid, hairs colorless;

petals 5, 1-2 × 0.5-1 mm;

nectary scale glabrous.

receptacle glabrous;

sepals 3-4, spreading or reflexed from base, 2-4 × 1-3 mm, glabrous;

petals 3-4, 2-4 × 1-3 mm;

nectary on petal surface, scale poorly developed and forming crescent-shaped ridge surrounding but not covering nectary;

style 0.1-0.2 mm.

globose to ovoid, 3-7 × 3-5 mm;

achenes 1.5-2 × 1.4-1.8 mm, glabrous;

beak slender, strongly curved, 0.6-1 mm.

globose or short-ovoid, 3-5 × 2-5 mm;

achenes 1-1.4 × 0.8-1.2 mm, glabrous;

beak linear, curved, 0.1-0.4 mm.

= 16.

= 32.