Flora of North America species comparison

few, blackish, filiform or somewhat tuberous.

becoming black when dry, tuberous, not ribbed, irregular.

erect, not scapose, 15-50(-60) cm, glabrous.

erect, 10-45 cm, rigid, glabrous.

blade: leaflets reniform to obovate, apically 4-7-lobed, 10-30 mm wide, lobe margins crenate, surfaces abaxially glaucous.

blade 2x-ternately compound;

leaflets cuneate to reniform, undivided, cleft, or lobed, 2-7 mm wide, margins entire or sometimes weakly crenate, surfaces glabrous, somewhat glaucous.

panicles or nearly corymbs, few flowered.

terminal, racemes, several flowered.

pedicels very slender, elongate;

sepals white, obovate-spatulate, 2.5-4 mm;

filaments white, 2.5-4 mm;

anthers 0.3-0.5 mm.

sepals lanceolate to obovate, in staminate flowers 1.7-3 mm, in pistillate flowers 0.7-1.5 mm;

filaments colored, not white, ca. 1.5 mm;

anthers 1.4-2 mm;

stigma color unknown.

3-8, spreading;

stipe 1-3(-4) mm, usually ± 1/2 as long (sometimes nearly as long) as achene body;

body flat, falcate, 3-5 mm, abaxially convex, adaxially concave, conspicuously 3-veined on each face;

beak minute.

few, not reflexed, nearly sessile;

stipe 0.1-0.3 mm;

body ovoid, not laterally compressed, adaxial surface 2.7-3.7 × 1.4-1.6 mm, glabrous, prominently 6-8-veined, veins not anastomosing-reticulate;

beak 0.5-1 mm.