Climber or liane 3–12 m. long or ± shrubby, said to have unpleasant smell when crushed; stems often drying purplish brown, striate when dry, with white spreading hairs, later glabrous; tendrils bifid, up to 30 cm. long.. Leaves simple, ovate, 4.5–17(–30) cm. long, 4–14(–25) cm. wide, narrowly acuminate at the apex, cordate at the base, margins with close subulate emergences 1 mm. long continued from nerves, with sparse short crisped hairs above and denser brownish hairs beneath particularly on the venation but not obscuring the surface and also dense sessile glands; petiole (1.5–)3–11.5 cm. long, crisped-hairy; stipules oblong, 3 mm. long, pilose with white hairs, clustered on very young shoots.. Inflorescences umbel-like cymes of umbel-like cymules, 7–9 cm. long; peduncle 3 cm. long; pedicels 3–6 mm. long; all axes of inflorescence densely pubescent with yellowish brown multicellular hairs.. Flowers with unpleasant smell.. Buds globose or broadly ovoid.. Calyx 1.2 mm. wide, ± entire, pubescent.. Petals yellow-green or brownish green, ovate, 1.7 mm. long, pubescent.. Fruits obovoid, 7 mm. long, 5 mm. wide, coarsely reticulate-rugose with sunken areas when dry.. Seeds similar to those of C. oliveri.. Figs. 5, p.29; 6/1.
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