Phyllostegia wawrana, a nonaromatic member of the Lamiaceae (mint) family, is a vine that is woody toward the base and has long, crinkly hairs along the stem. The leaves are opposite, ovate, and covered with hairs, especially along the veins of the lower surface. The leaves are 10.5 to 20 cm (4 to 7.8 in) long and 4 to 11 cm (1.6 to 4.3 in) wide. Flowers are borne in groups of four to six along a leafy flower stalk with one or two short lateral branches. Each of these lateral branches has a pair of leaves at the base. The corolla tube is about 10 mm (0.03 in) long, with an upper lip about 2 mm (0.08 in) long. The fruits are four greenish black nutlets in each flower and are about 2 mm (0.08 in) long.