Flora of North America species comparison

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

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

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

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

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.

racemes, usually elongate, few flowered.

panicles with long branches, many flowered.

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.

pedicels not recurved in fruit;

sepals yellowish green, ovate, 3-4 mm;

stamens 10-15;

anthers yellowish, 2-3 mm.

2-6, nearly sessile;

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

3-15, sessile;

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

= 14, 21.