Flora of North America species comparison

yellow to light brown, fibrous, from stout caudex.

erect, 30-80 cm, glabrous or glandular.

erect, stout, 40-150(-200) cm.

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: basal and proximal cauline 3-5x-ternately compound;

leaflets brownish green to dark green or bright green, ovate to cuneate-obovate, apically undivided or 2-3(-5)-lobed, 15-60 × 8-45 mm, length 0.9-2.6 times width, usually leathery with veins prominent abaxially, margins often revolute, lobe margins entire, surfaces abaxially usually pubescent and/or papillose (i.e., with very minute sessile glands).

terminal and axillary, panicles to corymbs, many flowered.

panicles, apically ± acutely pyramidal, many flowered;

peduncles and pedicels usually glabrous, rarely pubescent or stipitate-glandular.

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.

usually unisexual, staminate and pistillate on different plants;

sepals 4(-6), whitish, lanceolate, 3-5 mm;

filaments white to purplish, filiform, scarcely dilated distally, 2-6.5 mm, flexible;

anthers 1-3.6(-4) mm, usually strongly apiculate.

(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.

numerous, sessile or nearly sessile;

stipe 0-1.1 mm;

body ovoid to fusiform, 2-4.6 mm, prominently veined, usually pubescent and/or glandular;

beak often dehiscent as fruit matures, ± straight, filiform, 1.5-4.7(-6) mm, about as long as achene body.