Flora of North America species comparison

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

scrambling to climbing, 2-3 m.

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 1-2-pinnate, usually 5-foliolate, sometimes proximal and lateral leaflets also 3-foliolate;

leaflets ovate to lanceolate, usually 3-lobed, 1-3.5 × 0.7-3.2 cm, membranous to leathery, margins each usually with 1-3 acute to rounded teeth, rarely entire;

surfaces glabrous or very sparsely silky.

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

axillary, 3(-12)-flowered cymes or flowers solitary or paired.

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.

unisexual;

pedicel slender, 1-3.5 cm;

sepals wide-spreading, not recurved, white to cream, obovate to oblanceolate, 7-12 mm, abaxially pilose to silky, adaxially glabrous;

stamens 30-50;

staminodes absent or fewer than stamens;

filaments glabrous;

pistils 20-50.

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

beak 2-6 cm.

broadly ovate to nearly orbiculate, 4-4.5 × 2.5-3.5 mm, conspicuously rimmed, glabrous;

beak 2.5-4 cm.