Flora of North America species comparison

10-70 cm, from caudices, caudices ascending to vertical.

10-40 cm, from rhizomes, rhizomes horizontal.

3-6(-10), 1-2-ternate;

petiole (2-)4-10(-14) cm;

terminal leaflet petiolulate to ±sessile, broadly and irregularly rhombic to obovate, (1.5-)2.5-4.5(-5.5) × (1-)3-10 cm, base narrowly cuneate, margins incised on distal 1/3, apex broadly acute to nearly obtuse;

surfaces abaxially villous-silky, hispid to villous, or sparsely long-pilose, adaxially glabrous, nearly glabrous, villous-silky, or hispid to villous;

lateral leaflets (2-)3x-parted; ultimate segments (1.5-)2-3.5(-5) mm wide.

1, ternate;

petiole 10-25 cm;

terminal leaflet sessile, oblanceolate to ovate, (3.5-)4-7(-8) × 2.5-4(-6) cm, base broadly cuneate, margins coarsely serrate on distal 1/2-2/3, apex acuminate, surfaces ±glabrous;

lateral leaflets unlobed or occasionally 1x-lobed; ultimate lobes 8-25 mm wide.

2-7-flowered cymes or flowers solitary;

peduncle villous, pilose, or hispid to villous;

involucral bracts usually 3-5, occasionally 2 in secondary involucres, 1-2-tiered, ternate, occasionally incompletely ternate, ±similar to basal leaves, greatly reduced, bases distinct;

terminal leaflet petiolulate to ±sessile, broadly and irregularly rhombic to obovate, (1.5-)3-4(-5) × 0.5-1(-2) cm, base narrowly cuneate, margins incised on distal 1/3, apex broadly acute to nearly obtuse, surfaces abaxially hispid to villous, villous-silky, or sparsely long-pilose, adaxially glabrous, nearly glabrous, hispid to villous, or villous-silky;

lateral leaflets (2-)3x-parted or -lobed, lobes frequently unequal; ultimate lobes 1.5-3(-4.3) mm wide.

1-flowered;

peduncle ±glabrous;

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

terminal leaflet sessile, oblanceolate to ovate, (2-)3-8.7 × 0.8-3 cm, bases narrowly cuneate to cuneate, margins coarsely serrate on distal 1/2 -2/3, apex acuminate, surfaces ± glabrous;

lateral leaflets unlobed or occasionally 1x-lobed; ultimate lobes 15-30 mm wide.

sepals 5-9, green to yellow, blue, purple, red, or occasionally white, or abaxially blue, red, yellow and red, or purple, or tinged purple, adaxially white, yellow, yellow and red, blue, or tinged purple, ovate to oblong, 5-17 × (3.5-)5-7(-9) mm, abaxially hairy, adaxially glabrous;

stamens 50-80.

sepals (4-)5(-7), white, oblong to elliptic, (13-)15-20(-25) × 5-10 mm, glabrous;

stamens 50-70.

body irregularly ellipsoid or elliptic, flat, 3-4 × 1.5-2 mm, not winged, tomentose, woolly, or villous;

beak ±straight, distally recurved or strongly hooked, 1-6 mm, glabrous.

body elliptic, flat, 3.5-5 × 1-1.5 mm, not winged, puberulous;

beak straight or slightly curved, 1-1.5 mm, ±glabrous, not plumose.

spheric;

pedicel 6-15(-23) cm.

nearly spheric;

pedicel (3-)4-8(-10) cm.