Flora of North America species comparison

tuberous.

never tuberous.

erect or decumbent, never rooting nodally, hispid, base not bulbous.

erect from short caudex or rhizome, never rooting nodally, hispid, strigose, or glabrous, base not bulbous.

ovate in outline, 3-5-foliolate, 3.8-10 × 2.7-9 cm, leaflets 1x-lobed, ultimate segments narrowly elliptic to oblanceolate, margins entire or with few teeth, apex broadly acute to rounded-obtuse.

pentagonal in outline, deeply 3-5-parted, 1.8-5.2 × 2.7-9.8 cm, segments 1-2x-lobed or -parted, ultimate segments narrowly elliptic or oblong to lanceolate, margins toothed or lobulate, apex acute to rounded.

receptacle hispid;

sepals spreading or weakly reflexed ca. 1 mm above base, 7-10 × 3-5 mm, hispid;

petals 10-22, yellow, 12-22 × 4-9 mm.

receptacle glabrous;

sepals spreading, 4-6(-9) × 2-5 mm, hispid;

petals 5, yellow, 8-11(-17) × 7-13 mm.

globose to cylindric, 8-14 × 8-10 mm;

achenes 2.2-4.2 × 2.8-3.4 mm, glabrous, margin forming narrow rib 0.4-0.6 mm wide;

beak usually persistent, filiform from deltate base, straight, 2-4 mm.

globose, 5-7(-10) mm wide;

achenes 2-3 × 1.8-2.4 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, deltate, usually with tip short or long, straight or curved, subulate, 0.2-1 mm.

= 32.

= 14.