Flora of North America species comparison

5-30(-35) cm, from rhizomes, rhizomes horizontal.

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

0-1, ternate;

petiole 4-20 cm;

terminal leaflet sessile to petiolulate, oblanceolate to rhombic, oblong, or ovate, 1-5(-6) × 0.7-2.5(-3.5) cm, base narrowly cuneate, margins sharply serrate on distal 1/2(-2/3), apex acuminate to acute, surfaces strigose to nearly glabrous;

lateral leaflets unlobed or 1x-lobed; ultimate lobes 0.4-10 mm wide.

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 to pilose;

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

terminal leaflet sessile to petiolulate, oblanceolate to rhombic, oblong, or ovate, 1-8 × 0.8-3(-3.5) cm, bases narrowly cuneate to cuneate, margins crenate to serrate on distal 1/2(-2/3), apex acuminate to acute, surfaces abaxially glabrous or strigose, adaxially nearly glabrous to strigose;

lateral leaflets unlobed or 1x-lobed; ultimate lobes 0.5-10 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 5-7(-8), blue to purple, reddish, or purple to pink (rarely nearly white or abaxially reddish, violet, or marginally purple, adaxially white), ovate, oblong, or elliptic, 10-20 × 5-8(-10) mm, glabrous;

stamens 30-75.

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

stamens 25-40.

body oblong to ellipsoid, 4-5 × 1.5-2 mm, not winged, puberulous to pilose, rarely glabrous;

beak ±straight, (0.5-)1-1.5 mm, glabrous.

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 (1.5-)2-5(-7) cm.

nearly spheric;

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

=16.