Flora of North America species comparison

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

erect to ± reclining, slender, 50-200 cm, glabrous.

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

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

blade ternately and pinnately decompound;

leaflets grayish green to brownish to bright green, nearly orbiculate to ovate or obovate, apically undivided or shallowly 2-3-lobed, 5-16(-22) × 3-18 mm, length 1-3.3 times width, leathery and prominently reticulate abaxially, or sometimes quite membranous, margins sometimes revolute, lobe margins entire;

surfaces abaxially glabrous.

racemes, usually elongate, few flowered.

racemes or panicles, elongate, few flowered;

peduncles and pedicels neither pubescent nor glandular.

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.

either unisexual with staminate and pistillate on different plants, or bisexual and unisexual with staminate and bisexual on some plants, pistillate and bisexual on others;

sepals 4(-6), greenish to white, nearly orbiculate, 1-2 mm;

filaments white, filiform or sometimes clavate, 1.8-4 mm, rigid to flexible;

anthers 0.5-1.2 mm.

2-6, nearly sessile;

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

numerous, slightly stipitate;

stipe 0.3-0.7 mm;

body ovoid, 3-4.5 mm, prominently veined, glabrous;

beak 0.7-1.7 mm.

= 14, 21.

= 56.