Flora of North America species comparison

climbing with tendril-like petioles and leaf rachises, 3-6 m.

erect to ± sprawling, not viny, 2-7 dm,, sparsely to ± densely pilose.

blade pinnately 3- or 5-foliolate;

leaflets ovate or broadly lanceolate to narrowly deltate, to 6.5 × 3.5 cm, margins entire;

surfaces abaxially glabrous or very sparingly appressed-strigose on major veins.

blade narrowly to broadly ovate, unlobed or rarely few-lobed, 3-14 × (1.5-)2.5-8(-9.5) cm, ± leathery, reticulate adaxially;

surfaces abaxially moderately silky-pilose with spreading hairs or rarely nearly glabrous, not glaucous.

axillary, 3-12-flowered cymes or compound cymes or paniculate with cymose subunits.

terminal, flowers solitary;

bracts absent.

bisexual, often some unisexual (staminate) in same inflorescence;

pedicel 1-3.5 cm, slender;

sepals wide-spreading, not recurved, white, linear or elliptic to lanceolate or narrowly obovate, 0.9-2.2 cm, length ca. 2-3 times width, abaxially tomentose along margins, adaxially glabrous;

stamens ca. 50;

filaments glabrous;

staminodes absent;

pistils 5-10.

narrowly urn-shaped;

sepals pale yellow to pale purple, lanceolate, 1-3.5 cm, margins not expanded, thin, not crispate, tomentose, tip obtuse, spreading to recurved, abaxially silky-pubescent.

broad, flat, conspicuously rimmed, minutely appressed-silky, sometimes sparsely so;

beak 2-6 cm.

bodies pilose, hairs appressed-ascending;

beak yellowish brown to reddish brown, 3-6 cm, plumose.

= 16.