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抗风桐/伞叶避霜花 Pisonia grandis(图)

学名:Pisonia grandis

科属:紫茉莉科(Nyctaginaceae)腺果藤属(Pisonia)

别名:白避霜花、抗风桐


Trees to 14(-30) m; trunk 30-50(-70) cm in diam. Bark white-gray, with conspicuous furrows and large leaf-scars; puberulous to nearly glabrous, lenticels conspicuous; branches unarmed. Petiole 1-8 cm; leaf blade elliptic, oblong, or ovate, (7-)10-20(-30) × (4-)8-15(-20) cm, papery or membranous, puberulous or glabrescent, lateral veins 8-10 pairs, base rounded or slightly cordate, mostly oblique, margin entire, apex acute to acuminate. Cymes terminal, 1-4 × 3-5 cm; peduncle ca. 1.5 cm, with light brown hairs. Flowers bisexual. Pedicel 1-1.5 mm, apex with 2-4 oblong bracteoles. Perianth tube funnelform, ca. 4 mm, 5-lobed, with 5 rows of black glands. Stamens 6-10, exserted. Stigma fimbriate, included. Fruit clavate, ca. 1.2 cm × 2.5 mm, 5-ribbed, with sessile glands, without persistent perianth, rib with a row of viscid prickles, hairy between the ribs. Seed 9-10 × 1.5-2 mm. Fl. summer, fr. late summer-autumn.


Forests. Hainan (Xisha Qundao), E Taiwan [India, Indonesia, Malaysia, Sri Lanka; NE Australia, Madagascar, Maldives, Pacific Islands].


In the Xisha Qundao (part of the South China Sea Islands archipelago), Pisonia grandis is a dominant tree in the forests, often forming pure stands.


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