红茄冬 hong qie dong

Rhizophora longissima Blanco.

Trees, to 27(-30) m, d.b.h. to 70 cm. Stipules 5.5-8.5 cm. Petiole 2.5-4 cm; leaf blade broadly elliptic to oblong, 8.5-16 × 5-10 cm, base cuneate, apex ± blunt to ± acute. Inflorescences 2-4(-8)-flowered cymes; peduncle 2-5 cm. Flowers sessile. Calyx lobes ovate, 9-14 × 5-7 mm. Petals lanceolate, 7-9 mm, fleshy, partly embracing stamens, margins pilose. Stamens 8, 4 borne on base of petals, 4 borne on sepals, 6-8 mm; anthers sessile. Ovary emerging far beyond disk, free part elongate-conic, 2-3 mm; style 0.5-1.5 mm. Fruit dirty brownish green, elongate-ovoid, 5-7 × 2.5-3.5 cm, basally often tuberculate, apically slightly contracted. Hypocotyl cylindric, 30-60 cm. 2n = 36.

Mangrove forests; sea level. Taiwan [Cambodia, India, Indonesia, Japan (Ryukyu Islands), Malaysia, Myanmar, Pakistan, Philippines, Sri Lanka, Thailand, Vietnam; E Africa, SW Asia, N Australia, Indian Ocean islands, New Guinea, Madagascar, Pacific islands].