Flora of North America species comparison

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

5-18 cm, from rhizomes, rhizomes ascending to 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.

3-15, often purplish abaxially, simple, deeply divided;

petiole 5-20 cm;

leaf blade widely orbiculate, 1.5-7 × 2-10 cm, base cordate, margins entire, apex rounded, surfaces strongly villous to glabrescent;

lobes 3(-4), widely ovate, 1-4 cm wide;

middle lobe 50-70(-75)% of total blade length.

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, villous to pilose;

involucral bracts 3, 1-tiered, simple, dissimilar to basal leaves, sessile, calyx-like, closely subtending flower, ovate or elliptic, 0.65-1.8 × 0.5-1.2 cm, bases distinct, cuneate, margins entire, apex obtuse, strongly villous to glabrescent.

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 5-12, white to pink or bluish, ovate to obovate 7.5-14.5 × 3.5-7.7 mm, glabrous;

petals absent;

stamens 10-30.

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 narrowly ovoid, 3.5-5 × 1.2-1.6 mm, slightly winged, hispid, gradually tapering;

beak indistinct.

nearly spheric;

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

spheric;

pedicel 0.1-0.4 cm.

=14.