Flora of North America species comparison

yellow to light brown, fibrous, from stout caudex.

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

erect, 30-80 cm, glabrous or glandular.

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

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 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.

terminal and axillary, panicles to corymbs, many flowered.

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

(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.

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.