Epiphytic or terrestrial shrubs. Leaves alternate, coriaceous, usually pli-nerved but rarely pinnately veined, petiolate. Inflorescence terminal or axillary, often cauliflorous, racemose or subfasciculate with few to many, often pendent flowers; pedicels minutely bibracteolate, each subtended by a small bract. Flowers with the hypanthium subglobose to shortly campanulate, a sharply delineated disarticulation groove at its juncture with the pedicel, the calyx limb flaring or spreading, the lobes (3-4)5, ovate to triangular or merely apiculate; corolla cylindric to narrowly vasiform, the lobes 5, triangular to narrowly oblong, acute; stamens 10 of alternately unequal lengths, shorter than the corolla and usually only about 1/3 as long, the filaments equal and firmly connate into a monadelphous tube for more than half their length, membranous to thinly coriaceous, the anthers dorsally attached near their bases, the anther sacs subcoriaceous, firm, alternately unequal in length and dimorphic with slightly granular thecae, the flaring tubules not sharply differentiated from the anther sacs, opening by oblique clefts; stigma usually truncate, the style filiform and as long as the corolla or slightly exserted, the ovary inferior.
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