Epiphytic shrubs 1-2 m. tall, glabrous throughout except for the inflorescence, the branchlets striate. Leaves simple, elliptic to elliptic-oblong, 18-25 cm. long, 8-12 cm. broad, abruptly acuminate at the apex, obtuse to subcordate at the base, entire, the costa prominent, the primary lateral veins 10-16 per side, spreading; petiole 0.7-3.0 cm. long, the ligule oblong-linear, to 2.5 cm. long, persistent. Inflorescences of a dozen or more racemosely arranged umbels, terminal, puberulent, the primary peduncle 6-8 cm. long, the primary rhachis 7.5-12.0 cm. long, the floriferous peduncles 0.5-1.0 cm. long; pedicels 2-6 mm. long. Flowers 3-12 per umbel; calyx obconic, 1.0-1.5 mm. long and slightly broader, the limb obscurely apiculate; petals connate into a semiglobose umbonate calyptra 2.0-2.5 mm. in diameter; filaments slender, 4-7 mm. long, the anthers about 1.5 mm. long; styles connate into a column, free apically. Fruit subglobose, to 3.5 mm. in diameter, conspicuously costate.