It is a 3–5 meter high
vine with sulcate stems, angled to rarely winged young stems, and translucent
trichomes with rusty septa. Long, simple, and hairy trichomes are sometimes mixed with glandular-tipped trichomes. The shoots branch and become woody over time. Young shoots, petioles, and undersides of leaves are covered with brown, delicate hairs. The toothed leaves are trifoliolate, oak-shaped, dark green, and papery, with simple hairy trichomes. The undersides show nerves often flattened and forming structures similar to
domatia, but without a concentration of trichomes. The leaf blades (at least adaxially) have brown to green tones when dry. Terminal
leaflets are elliptic or rhombic, (2.3–) 6.8–16.5 cm long and (0.8–) 2–9 cm wide, apex acute to acuminate, base
cuneate,
petiole 0–20 mm long, lateral leaflets inequilateral, elliptic or ovate, apex acute or obtuse, base oblique-rounded.
Extrafloral nectaries on the stipule have been reported this species.
Inflorescences Inflorescences 2.5–5.3 cm long, with
pedicels 1.5–4 mm long, flowers cream, yellow, yellow-green or reddish;
calyx cup-shaped, basally with hispidulous, rusty, short and thick trichomes mixed with glandular-tipped trichomes and apically granular, apex truncated;
corolla in bud 1.5–2.5 mm long, glabrous to
papillate (puberulent), apex rounded. Fruit obovoid, 7–9 mm long, purplish to black; seed 1, obovoid, 6–7 mm long. ==Distribution==