Flora of North America species comparison

erect, coarse, 50-300 cm.

erect, scapose, or nearly scapose with very slender rhizomes, (3-)5-20(-30) cm, glabrous.

blade ternately and pinnately decompound;

leaflets light to dark green, cordate or nearly orbiculate to ovate or obovate, apically undivided to 2-3(-5)-lobed or -toothed, 11-68 × 5-70 mm, length 0.8-2.6 times width, membranous to firm, margins scarcely revolute, lobe margins entire, surfaces abaxially pubescent to glabrous.

blade 2x-pinnately compound, proximal primary divisions ternate;

leaflets cuneate-obovate to orbiculate, apically 3-5-lobed, 2-10 mm, surfaces glabrous.

racemes or panicles to corymbs, apically ± rounded, many flowered;

peduncles and pedicels often pubescent.

racemes, usually elongate, few flowered.

unisexual or bisexual (sometimes bisexual with very few stamens);

sepals 4(-6), white to purplish, elliptic-rounded, 2-3.5 mm;

filaments ascending, white to purplish, filiform to distinctly clavate, 1.5-7 mm, usually rigid;

anthers 0.5-1.5(-2.1) mm, usually blunt or only slightly apiculate.

pedicels recurved in fruit;

sepals early deciduous, purplish tinged, ovate or elliptic, 1-2.3(-2.7) mm;

stamens 8-15;

filaments purple;

anthers bright yellow, 1.5-3 mm;

stigmas purple.

numerous, sessile to stipitate;

stipe 0.5-1.5(-2.4) mm;

body ellipsoid, 3-5 mm, prominently veined, usually pubescent;

beak usually persistent, straight or coiled distally, 0.6-2.5 mm, about 1/2 length of achene body.

2-6, nearly sessile;

body lance-obovoid, 2-3.5 mm, with thick veins.

= 126.

= 14, 21.