Flora of North America species comparison

dark brown to ± black (when dry), fibrous.

mostly erect, sometimes reclining, (20-)30-60(-150) cm, glabrous, from rhizomes or branched caudices.

erect, nearly cespitose or rhizomatous, 15-150 cm, glabrous or somewhat glandular.

blade green, (2-)3-4x-ternately compound, membranous;

leaflets obliquely orbiculate or nearly cordate, apically 3-lobed, (5-)10-20 × (6-)8-12(-18) mm wide, lobe margins crenate, surfaces abaxially often glandular.

blade 3-4-ternate;

leaflets nearly orbiculate or broadly ovate, irregularly 2-3-lobed or margins dentate in distal 1/2, 15-30 mm, surfaces glabrous to glandular.

terminal and axillary, panicles, open and leafy, many flowered.

panicles with long branches, many flowered.

sepals whitish or greenish, in staminate flowers ovate to elliptic, 3-5 mm; in pistillate flowers ovate to rhombic or broadly lanceolate, 1.5-2 mm;

filaments deep yellow or purplish, 4-7.5 mm;

anthers 2.2-3.4 mm, apiculate with tip to 0.8 mm;

stigma purplish.

pedicels not recurved in fruit;

sepals yellowish green, ovate, 3-4 mm;

stamens 10-15;

anthers yellowish, 2-3 mm.

7-11(-14), not reflexed, sessile to short-stipitate;

stipe 0-2 mm;

body oblanceolate to obliquely obovate-elliptic, strongly laterally compressed, (5-)9(-11) mm, glandular or glabrous, 3-4(-5)-veined on each side, veins ± parallel, converging toward ends (rarely branched or sinuous), not anastomosing-reticulate;

beak 1.5-4 mm.

3-15, sessile;

body broadly ovoid to narrowly oblong-ovoid, 2.5-4 mm, ± weakly veined.