Flora of North America species comparison

yellow to medium brown or black, thin, fibrous.

brownish, fusiform-tuberous with dried ribs.

erect, 30-100(-120) dm, glabrous, often from well-developed rhizomes.

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

blade 3-4x-ternately compound;

leaflets orbiculate to obovate-cuneate or cordate, apically 3-lobed, 10-30 mm wide, lobe margins coarsely crenate, surfaces glabrous to glandular.

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

terminal (some flowers in axils of distal leaves), panicles, rather open, many flowered.

terminal and axillary, panicles, elongate, few flowered.

sepals whitish or greenish or purplish tinged, ovate, 3.5-4.4 mm in staminate flowers, 1.5-2 mm in pistillate flowers;

filaments purplish, 4-10 mm;

anthers 1.5-4 mm, long-apiculate;

stigma often purplish.

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.

6-9, spreading to reflexed, short-stipitate;

stipe 0.4-1.2 mm;

body fusiform, not laterally compressed, (4-)6-9(-10) mm, tapering at both ends, glandular, strongly 3-veined on each side, veins not anastomosing;

beak 3-4.5(-6) mm.

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.