Flora of North America species comparison

yellow to medium brown or black, thin, fibrous.

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

erect, 20-50 cm, glabrous, from rhizomes.

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 3-4x-ternately compound;

leaflets obovate to orbiculate, apically 3-5-lobed, 5-20 mm, lobe margins crenate, surfaces abaxially glabrous or glandular-puberulent.

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

terminal, panicles, narrow and dense, many 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 greenish white, lanceolate or broadly ovate to elliptic or obovate, 2-4 mm;

filaments colored, not white, (1.8-)3-5.5 mm;

anthers 2-3.5 mm, blunt to mucronate;

stigma commonly yellowish.

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.

5-17, erect to spreading, not reflexed, nearly sessile;

stipe 0.1-0.3 mm;

body often distinctly curved, elliptic-oblong, nearly terete to slightly flattened, adaxial surface 3-4(-6) mm, glabrous to glandular, veins distinct, not anastomosing-reticulate;

beak 1.5-2.5(-3) mm.