Flora of North America species comparison

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

5-35(-60) cm, from tubers with rhizomes near apex, tubers ascending or vertical, rhizomes horizontal or ascending.

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 3-9(-10) cm;

terminal leaflet petiolulate, rarely sessile, obtriangular, 2-3-cleft, 1-3 × 0.8-2(-2.5) cm, base narrowly attenuate to strongly and narrowly cuneate, margins serrate, rarely dissected on distal 2/3, apex obtuse to broadly acute, surfaces glabrous;

lateral leaflets ±pinnately 1-2(-3)×-lobed or -parted; ultimate lobes 2-10 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.

1-flowered;

peduncle proximally glabrous, distally villous;

involucral bracts 3, borne below middle of scape at anthesis, 1-tiered, simple, ±similar to basal leaves, obtriangular, 3-cleft, 1-2.5 cm, bases somewhat clasping, connate, margins incised on distal 1/2, apex acuminate, surfaces sparsely pilose;

segments 3, broadly linear;

lateral segments 1-2x-lobed or -parted; ultimate lobes 1-2.5 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 10-20(-30), white to rose or blue to purple, linear to oblong, (6-)10-20(-22) × 2-5(-7) mm, abaxially sparsely hairy, adaxially glabrous or nearly so;

stamens 50-60.

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

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

body ovoid, 1.5-2.5(-3) × ca. 2 mm, not winged, densely woolly;

beak straight, 1.3-2 mm, projecting beyond achene indument, proximally tomentose, not plumose.

spheric, rarely cylindric;

pedicel (2-)3-10 cm.

fusiform;

pedicel (5-)10-20 cm.

=16.