Flora of North America species comparison

scrambling to climbing, 3-4 m. Leaf blade 3-foliolate;

leaflets ovate, largest leaflets usually 3-lobed, 1.5-6 × 1.5-5 cm;

terminal leaflet occasionally 3-cleft, margins usually toothed;

surfaces glabrous or sparsely silky.

erect, 1.5-4(-7) dm, moderately to densely villous, sometimes sparsely so near nodes.

blade ovate-elliptic to broadly ovate, unlobed, 5-14 × 3.5-11 cm, leathery, prominently reticulate adaxially;

surfaces abaxially glabrous or sparsely villous-tomentose on veins, not glaucous.

axillary, flowers solitary, rarely 3-flowered cymes.

terminal, flowers solitary;

bracts absent.

unisexual;

pedicel (including peduncle) stout, 3.5-11 cm;

sepals wide-spreading, not recurved, white to cream, ovate or elliptic to obovate or oblanceolate, 10-21 mm, abaxially and adaxially pilose;

stamens 50-100;

filaments glabrous;

staminodes absent or 50-100;

pistils 75-100.

narrowly urn-shaped;

sepals pale blue-violet to purple, pale green toward tips, lanceolate, 2-4 cm, margins not expanded or 1-3 mm wide, thin or ± thick, not crispate or slightly crispate, tomentose, tips acuminate, spreading to recurved, abaxially glabrous to sparsely villous.

asymmetric-ovate, not broadly orbiculate, 3-4 × 1.5-2 mm, not conspicuously rimmed, glabrous;

beak 3.5-5.5 cm.

bodies proximally pubescent with silky or sparse short hairs, distally cobwebby-tomentose;

beak 1.5-3(-3.5) cm, proximally silky-tomentose, sparsely appressed-pubescent to nearly glabrous toward tip.

= 16.

= 16.