Shrub, 0.3-2 m tall, bushy. Stems spreading; branches 4-lined and flattened at first, eventually terete. Leaves with petiole 2-4 mm long; lamina 25-88 mm long, 10-42 mm broad, ovate to lanceolate or oblong-lanceolate, apex acute or apiculate to rounded, base broadly cuneate to rounded, venation rather densely to scarcely reticulate. Inflorescence of 1(2-7)-flowered sub¬corymbose cymes; flowers 4-7 cm in diameter. Sepals 7-18 mm long or sometimes longer and foliaceous, narrowly elliptic or lanceolate to broadly ovate or very broadly elliptic, acute to apiculate or more rarely obtuse, entire, spreading or ascending in bud and fruit. Petals obovate, 16-30 mm long, 2.5-3 x longer than the stamens. Stamens 60-80 in each fascicle. Ovary 6-7 mm long; styles half as long as the ovary, free, gradually divergent, spreading at apex. Capsule (9-)14-19 mm long, ovoid, without vittae or vesicles. Seeds 0.7-1 mm long, carinate or slightly winged; testa shallowly linearreticulate.