Flora of North America species comparison

(7-)10-25(-30) cm, from caudices, caudices ascending to primarily vertical.

10-30(-40) cm, from caudex-like tubers, tubers ascending to vertical.

5-15, 2-ternate, occasionally irregularly so;

petiole 2-10 cm;

terminal leaflet sessile or basally attenuate and appearing petiolulate, obovate to obtriangular, 0.5-3 × 0.5-2 cm, base narrowly cuneate to cuneate, margins incised to dissected on distal 1/3-1/2, apex broadly acute to obtuse, surfaces villous;

lateral leaflets 2x-parted, division frequently irregular; ultimate segments 1-2.6 mm wide.

1-3(-5), 1-2-ternate;

petiole 5-7 cm;

terminal leaflet sessile, rarely petiolulate, irregularly oblanceolate, (1.5-)2-3(-3.5) × 1-2(-2.5) cm, base narrowly cuneate, margins incised to dissected on distal 2/3, apex broadly acute, surfaces nearly glabrous;

lateral leaflets 1-2x-parted and/or -lobed; ultimate lobes 4-8(-12) mm wide.

1(-2)-flowered;

peduncle villous;

involucral bracts 3(-4), 1-tiered, ±similar to basal leaves, highly reduced, 2-ternate or irregularly so, bases distinct;

terminal leaflet sessile or basally attenuate and appearing petiolulate, obovate to pinnatifid, 1-3.5 × 0.5-2 cm, bases narrowly cuneate to cuneate, margins incised to dissected on distal 1/3-1/2, apex broadly acute to obtuse, surfaces villous;

lateral leaflets 2x-parted, division frequently irregular; ultimate segments 1-2.5 mm wide.

2-3(-5)-flowered cymes or flowers solitary;

peduncle proximally nearly glabrous, distally villous;

involucral bracts primarily 3, (1-)2-tiered, simple, ±similar to basal leaves, pinnatifid, 1.5-5.5 cm (primary involucral bracts 2-5.5 cm, secondary involucral bracts 1.5-3.5 cm), bases distinct, broadly to narrowly cuneate to clasping, margins irregularly serrulate and pinnatifid on ca. distal 1/2, apex narrowly acute to acuminate, surfaces thinly pilose;

segments primarily 3, linear to pinnatifid;

lateral segments 1-2x-parted and/or -lobed; ultimate lobes 1.5-2.5 mm wide.

sepals (5-)6-9, white, or abaxially white, tinged blue, and adaxially white, ovate, rarely oblong or narrowly obovate, 8-20 × 6-10 mm, abaxially hairy, rarely glabrous, adaxially glabrous;

stamens 80-100, whitish;

styles white.

sepals 8-10, pink to white, linear-oblong, 10-14(-20) × (2-)3-5(-6) mm, sparsely hairy;

stamens 50-60.

body ovoid, 2-4 × 1-1.5 mm, not winged, woolly;

beak straight, 2-4(-6) mm, glabrous.

body orbiculate, flat, 2.5-3.5 × 2-2.5 mm, not winged, densely villous;

beak straight, ca. 1.5 mm, minutely puberulous, not plumose.

spheric, rarely cylindric;

pedicel (2-)3-10 cm.

fusiform;

pedicel (5-)7-15(-22) cm.

=16.