Flora of North America species comparison

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

brownish, fusiform-tuberous with dried ribs.

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

reclining, branched and flexible proximally, 10-40 cm, glabrous.

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: leaflets ovate or obovate to reniform or orbiculate, apically shallowly to deeply 3-7-lobed, rarely undivided, 4-15 mm wide, surfaces glabrous.

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

terminal and axillary, panicles, elongate, few 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.

sepals whitish, lanceolate to obovate, 1.5-2.7 mm;

filaments colored, not white, 1.5-2 mm;

anthers 1.7-2.5 mm, mucronate;

stigma color unknown.

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.

1-6, not reflexed, nearly sessile;

stipe 0.1-0.3 mm;

body oblong to elliptic-lanceolate, not compressed, 3-3.7 × 0.7-1.2 mm, glabrous, prominently 6-8-veined, veins not anastomosing;

beak 1.3-2 mm.