Flora of North America species comparison

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

5-30 cm, from rhizomes, rhizomes primarily horizontal.

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.

0-1, ternate;

petiole 4-25 cm;

terminal leaflet ± sessile, rhombic to oblanceolate or obliquely oblanceolate, 1-4.5 × 1.4-3.7 cm, base narrowly cuneate, margins crenate-serrate, serrate, occasionally dentate or incised on distal 1/3-1/2, apex acuminate to obtuse, surfaces glabrous or puberulous to pilose;

lateral leaflets unlobed or 1x-lobed or -parted; ultimate lobes 4-15 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 puberulous, villous, or glabrous;

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

terminal leaflet petiolulate or sessile, rhombic to oblanceolate or obliquely oblanceolate, 1-5(-5.5) × 0.5-3 cm, base narrowly cuneate, margins crenate to serrate, serrate to dentate, occasionally incised on distal 1/3-1/2, apex acuminate to acute, surfaces glabrous or puberulous to pilose;

lateral leaflets unlobed or 1x-lobed or -parted, ultimate lobes 5-20 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 (4-)5(-6), white, rarely pink, or abaxially white or tinged pink or blue and adaxially white, oblong to ovate, 6-25 × 4-8 mm, glabrous;

stamens 30-60.

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 ellipsoid or ovoid, 2.5-4.5 × 1-1.5 mm, not winged, puberulous or villous;

beak straight to curved, rarely recurved, 0.5-2 mm, ±glabrous to sparsely puberulous, not plumose.

nearly spheric;

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

spheric or nearly so;

pedicel 1-6(-8) cm.