Shrubs and trees, unarmed, terrestrial or usually epiphytic, without raphides in the tissues, generally succulent, sometimes with resinous buds, sometimes deciduous. Leaves opposite, petiolate entire, with venation not lineolate, without domatia; stipules interpetiolar and shortly intrapetiolar, triangular to ovate, erect, caducous. Inflorescences terminal, corymbiform-cymose, 9-14-flowered, pedunculate, the bracts reduced and caducous. Flowers pedicellate, bisexual, homostylous, probably protandrous, large, showy; hypanthium ellipsoid; calyx limb developed, 4--5-lobed to the base, without calycophylls; corolla salverform or somewhat funnelform, red to dark violet, glabrous, lobes 4--5, convolute in bud, without appendices; stamens 5, inserted in corolla tube, anthers narrowly oblong, dorsifixed near base, included, opening by longitudinal slits, without appendages; ovary 2-locular, ovules numerous in each locule, on axile placentas, stigma 1, shortly bilobed, partially exserted. Fruits capsular, obconic or narrowly ovoid to narowly cylindrical, shortly loculicidal at the apex then deeply septicidal, woody, smooth, valves 2 but capsules 4-lobed at top, with calyx limb deciduous; seeds numerous, laterally flattened, fusiform, marginally winged and entire to erose.