Bonamia menziesii, a member of the Convolvulaceae (morning-glory) family, is a vine with twining branches up to 10 m (33 ft) long that are fuzzy when young. The leathery, oblong to oval leaves measure 3 to 9 cm (1.2 to 3.5 in) in length and 1 to 4 cm (0.4 to 1.6 in) wide. The upper leaf surface is usually hairless or covered with sparse hairs and the lower surface is covered with dense fuzzy hairs. The white to greenish funnel-shaped flowers, each 2 to 2.5 mm (0.08 to 0.1 in) long, are produced singly or in clusters of three on stalks 1 to 2 cm (0.4 to 0.8 in) long with tiny bracts (modified leaves) at the base of each stalk. Stamens (male reproductive organs) usually have glandular hairs at their bases. The flower has two styles (narrow part of female reproductive organs), which are separate or partly fused. The fruits are tan or yellowish brown capsules 1 to 1.5 cm (0.4 to 0.6 in) long, which contain one or two oval seeds imbedded in black pulp.