Delissea undulata, a member of the Campanulaceae (bellflower) family, is a palm-like tree with unbranched woody stems 2 to 10 m (6 to 30 ft) tall. The leaves are long and narrow or elliptic with long petioles and undulate or flat, toothed margins, about 5 to 21 cm (2 to 8 in) long and 3 to 10 cm (1 to 4 in) wide. The 5 to 15 flowering stalks each bear 5 to 20 greenish-white, slightly down-curved flowers 1.6 to 2.5 cm (0.6 to 1.0 in) long with one or two small knobs on the upper surfaces. The fruits are ovoid to globose purple berries 0.6 to 1.2 cm (0.2 to 0.4 in) long.