Flora of North America species comparison

yellow to medium brown or black, thin, fibrous.

fibrous.

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

erect, 6-18(-20) dm, 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 3-4x-ternately compound;

leaflets orbiculate to obovate, apically 3-cleft or 3-parted, divisions undivided or shallowly 3-lobed, 15-40 mm wide, lobes rounded or somewhat acute, surfaces glabrous or glandular.

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

terminal, panicles, 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 whitish to purplish, elliptic to ovate or lanceolate, 2-4(-5) mm;

filaments whitish to pinkish, 3-6 mm;

anthers (1.4-)2-4 mm, distinctly apiculate.

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.

10-15, spreading in globose heads, not reflexed, sessile or nearly so;

stipe 0-0.6 mm;

body nearly globose to obovoid to obliquely obovate, laterally compressed, somewhat inflated and papery, 4-7(-8) mm, glabrous to glandular, often with 1 or 2 primary veins on each side, veins sinuous, branched, anastomosing-reticulate;

beak 2-4 mm.