Flowers 4-merous. Hypanthium thin-walled, narrowly campanulate at anthesis. Calyx-lobes minute, triangular, often glandular-setose at the apex. Petals lance-olate to obovate, acute or acuminate, commonly glandular-setose at the apex. Stamens 8, isomorphic or weakly dimorphic; anthers narrowly oblong to elliptic or nearly globose, blunt; connective somewhat prolonged below the thecae, articu-late to the apex of the filament, either simple or with two minute ventral lobes. Ovary superior, 2-celled; stigma truncate or capitellate. Fruit a globose thin-walled capsule, rupturing irregularly at maturity; seeds rugose, cochleate. Erect or spreading herbs with lanceolate to ovate leaves and terminal, divaricately branched, paniculiform cymes of small, ephemeral, white or pink flowers.