Flora of North America species comparison

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

viny, to 5 m, glabrous or sparsely pubescent.

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 1-pinnate;

leaflets 8-10 plus additional tendril-like terminal leaflet, elliptic to ovate, usually unlobed, occasionally 2-3-lobed, 2-8 × 1.5-6.5 cm, leathery, abaxially and adaxially prominently reticulate;

surfaces abaxially glabrous and glaucous.

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

axillary, 1-7-flowered.

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.

broadly urn-shaped;

sepals abaxially pale lavender to reddish purple, grading to pale green toward tip, narrowly ovate, 1.5-3 cm, margins not expanded, thick, not crispate, tomentose, tips acute, slightly spreading, glabrous.

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

beak 2-6 cm.

bodies appressed-pubescent;

beak (3-)5-6 cm, plumose.

= 16.