Flora of North America species comparison

slender, 0.3-0.8 mm thick.

decumbent, sparsely pilose.

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

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.

sessile;

receptacle glabrous or pilose;

sepals 3, spreading, 1-2 × 0.5-1 mm, hirsute;

petals 3, 1-2 × 0.5-0.8 mm.

pedicels pilose;

receptacle pilose;

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

petals 5, 5-8 × 3-4 mm;

nectary scale glabrous.

hemispheric, 2-2.5 × 3-3.5 mm;

achenes 10-15 per head, 1.3-1.7 × 1-1.3 mm, faces and proximal margin finely papillate, each papilla crowned with hooked bristle, otherwise glabrous;

beak semicircular to deltate, curved, 0.2-0.5 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.

and lower cauline leaf blades reniform, 3-parted, 0.8-1.7 × 1.2-2 cm, segment base cordate, margins dentate or lobulate, apex rounded-obtuse.

= 64.