Flora of North America species comparison

black, tuberous.

brownish, fusiform-tuberous with dried ribs.

erect, scapose, 10-30 cm, glabrous.

reclining, branched and flexible proximally, 10-40 cm, glabrous.

blade 2x-ternately compound;

leaflets widely ovate or obovate to nearly rotund, apically 3-lobed, 8-30 mm wide, surfaces glabrous.

blade: leaflets ovate or obovate to reniform or orbiculate, apically shallowly to deeply 3-7-lobed, rarely undivided, 4-15 mm wide, surfaces glabrous.

umbels or flowers solitary, (1-)3-6-flowered;

involucral bracts usually 3-foliolate, petiolate and opposite, or sessile with leaflets appearing to be whorls of 6 petiolate leaves, otherwise similar to basal leaves.

terminal and axillary, panicles, elongate, few flowered.

sepals not caducous, white to pinkish, showy, elliptic to obovate, 5-18 mm, longer than stamens;

filaments narrowly clavate, 3-4 mm;

anthers 0.4-0.7 mm.

sepals whitish, lanceolate to obovate, 1.5-2.7 mm;

filaments colored, not white, 1.5-2 mm;

anthers 1.7-2.5 mm, mucronate;

stigma color unknown.

(4-)8-12(-15), short-stipitate;

stipe 0.1-0.4 mm;

body ovoid to fusiform, 3-4.5 mm, prominently 8-10-veined.

1-6, not reflexed, nearly sessile;

stipe 0.1-0.3 mm;

body oblong to elliptic-lanceolate, not compressed, 3-3.7 × 0.7-1.2 mm, glabrous, prominently 6-8-veined, veins not anastomosing;

beak 1.3-2 mm.