Flora of North America species comparison

(3-)10-30(-40) cm, from rhizomes, rhizomes horizontal, occasionally ascending.

usually absent, occasionally 1, ternate;

petiole (1.5-)2.5-20(-25) cm;

terminal leaflet sessile or petiolulate, ovate to rhombic or oblanceolate, (1-)1.5-4.5(-5) × (0.6-)1-2.5(-3.5) cm, base cuneate, margins crenate, sometimes coarsely serrate, on distal 1/2-2/3, apex narrowly acute to acute, surfaces white-puberulous to pilose to nearly glabrous;

lateral leaflets unlobed, rarely scarcely 1x-lobed; ultimate lobes 4-12 mm wide.

1-flowered;

peduncle proximally glabrous, distally villous or pilose;

involucral bracts 3, 1-tiered, ternate, ±similar to basal leaves, bases distinct;

terminal leaflet sessile to petiolulate, ovate to rhombic or oblanceolate, (1-)1.5-4.5(-5) × (0.6-)1-2.5(-3.5) cm, bases cuneate, margins crenate, sometimes coarsely serrate, on distal 1/2-2/3, apex narrowly acute to acute, surfaces white-puberulous to pilose to nearly glabrous;

lateral leaflets unlobed, rarely scarcely 1x-lobed; ultimate lobes 4-12 mm wide.

sepals 5-6, white or blue, elliptic to obovate, rarely ovate, 7-15 × 4-8 mm, glabrous;

stamens 25-40.

body elliptic, flat, 3-4 × 1.5-2 mm, not winged, puberulous to pilose;

beak curved or recurved, 0.6-1 mm, glabrous.

nearly spheric;

pedicel (0.5-)3-10 cm in fruit.

=16.