Cyanea tritomantha, a member of the Campanulaceae (bellflower) family, is a palm-like tree 1.8 to 3 m (6 to 10 ft) tall. Leaves are oblong to oblanceolate or obovate, blades are 38 to 95 cm (15 to 37 in) long, 11 to 20 cm (4.3 to 8 in) wide. The upper leaf surface is green and smooth, lower surface is pale green and pubescent with sharp projections along the midrib, margins hardened and toothed, apex acuminate to acute or obtuse, and tapering or wedge-shaped at the base. Inflorescences are 5- to 20-flowered and clustered among the leaves. Flowers are blackish purple or greenish white externally, and pale bluish white or white within, 6 to 7.5 cm (2.4 to 3 in) long, 5 to 6 mm (0.2 to 0.24 in) wide, densely hairy, with the tube suberect to slightly curved. The corolla lobes are spreading, as long as the tube; staminal columns and anthers are glabrous, the lower two with apical tufts of white hairs. Berries are orange, ellipsoid, 15 to 25 mm (0.6 to 1 in) long, 10 to 22 mm (0.4 to 1 in) in diameter, crowned by the persistent calyx lobes.