Description from Flora of China
Rhizophora sect. Kandelia Candolle, Prodr. 3: 32. 1828.
Trees. Branches terete. Leaf blade margin entire. Inflorescences axillary, cymes, 4-9-flowered, pedunculate. Calyx deeply 5-lobed, subtended by a cuplike involucre of bracteoles. Petals 5, with long setae in sinus between petals, 2-lobed; lobes apically fimbriate. Stamens numerous, on a disk; anthers 4-celled, cells longitudinally dehiscent. Ovary inferior, 1-loculed; ovules 6 per locule; style filiform; stigma 3-lobed. Fruit with persistent calyx, attached to plant until falling with viviparous seedling. Seed 1, germinating on plant. Hypocotyl cylindric, spindle-shaped or clavate, apex pointed.
One species: E and SE Asia; one species in China.