Flora of North America species comparison

yellow to light brown, fibrous, from stout caudex.

yellow to medium brown or black, thin, fibrous.

erect, 30-80 cm, glabrous or glandular.

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

blade 1-4x-ternately compound;

leaflets reniform or cordate to obovate or orbiculate, apically 3-12-lobed, 10-45 mm wide, lobe margins often crenate, surfaces abaxially glabrous or glandular.

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.

terminal and axillary, panicles to corymbs, many flowered.

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

sepals greenish to purple, ovate or obovate to oval, 1.8-4 mm;

filaments yellow to greenish yellow, 3.5-5.5 mm;

anthers 2-4 mm, mucronate to acuminate;

stigma purple.

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.

(3-)7–13, not reflexed, sessile or nearly so;

stipe terete, 0-0.2 mm;

body ovoid to ellipsoid, not laterally compressed, 3.5-5 mm, glabrous, very strongly veined, veins not anastomosing-reticulate;

beak 1.5-3 mm.

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.