Flora of North America species comparison

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

climbing, 2-7 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 3-foliolate;

leaflets ovate to lanceolate, 3.5-9 × 1.5-7.5 cm, margins coarsely toothed to entire;

surfaces abaxially sparsely to densely pilose, adaxially glabrate.

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

axillary, 3-many-flowered simple or compound cymes.

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, 1-2 cm;

sepals wide-spreading, not recurved, white to cream, elliptic or nearly oblong to oblanceolate, 6-14 mm, abaxially densely white-hairy, adaxially sparsely white-hairy;

stamens ca. 30-50+;

filaments glabrous;

staminodes absent or fewer than stamens;

pistils 40-70;

beak nearly equaling sepals.

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

beak 2-6 cm.

ovate, 2.5-3.5 × l.5 mm, conspicously rimmed, sparsely short-hairy;

beak 2.5-5 cm.

= 16.