Description from Flora of China
Rhizophora mucronata Lamarck var. stylosa (Griffith) Schimper.
Trees, often less than 8 m tall. Bark reddish or pale gray, rough. Petiole 2-3 cm; leaf blade obovate, 6.5-11 × 3-4(-5.5) cm, base broadly cuneate, apex mucronate. Inflorescences 2- to many flowered; peduncle 1-5 cm. Pedicel 5-10 mm, terete; bracteoles brown, connate. Calyx lobes lanceolate to oblong-lanceolate, 9-12 × 3-5 mm. Petals to 1.2 cm, involute, margin densely villous. Stamens usually 8; filaments short but distinct; anthers 5-6 mm. Ovary emerging beyond disk, free part shallowly conic and less than 1.5 mm; style 4-6 mm; stigma lobes 2. Fruit green, conic, 2.5-3 × ca. 2 cm. Hypocotyl cylindric, 30-40 cm, apex acute. Fl. and fr. autumn-winter.
Mangrove forests; sea level. S Guangdong, S Guangxi, N Hainan [Cambodia, Indonesia, Japan (Ryukyu Islands), Malaysia, Philippines, Vietnam; N Australia, New Guinea, Pacific islands].