Small erect shrubs; branchlets glabrous to puberulous with simple hairs. Leaves alternate, petiolate, simple, glandular-punctate in 2 rows abaxially; margins narrowly translucent. Flowers 5-merous, solitary, terminal or axillary, subtended by 2 bracteoles and 6–8 bracts (reduced leaves). Calyx lobed. Petals free, spreading, white or pink; claw usually adnate with staminode. Stamens 5; anthers with a minute apical gland; staminodes 5, gland-tipped. Disc cupular or lobed. Ovary 5-carpellate, glabrous; carpel apices globose with an immersed gland; style short, glabrous; stigma capitate, depressed-globose. Fruit 5-carpellate, glabrous, with short horns (rarely horns absent), spreading or erect. Seeds black, shining.
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