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.

14-50 cm, arising singly or in dense clusters of 2-3 from short, horizontal, fibrous-rooted 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 ternately compound, cauline blades gradually reduced upward, distalmost 2-ternate;

leaflets broadly obovate, apically 3-toothed, otherwise undivided, 5-8 × 4-5 mm, leathery, surfaces glabrous, glaucous.

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 4, color unknown, lanceolate to ovate, 2-3 mm;

filaments brownish, 2-3 mm;

anthers 2-3 mm, apiculate;

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.

4-5(-6), not reflexed, nearly sessile;

stipe 0.1-0.2 mm;

body oblique-obovate, strongly laterally compressed, 4-5 mm, glabrous, glaucous, prominently 3-veined on each side, veins converging near apex, rarely branched or sinuous, not anastomosing-reticulate;

beak ca. 1.5 mm.