五层龙Salacia prinoides (Willd.) DC.

别名：桫拉木;

科名：翅子藤科 Hippocrateaceae

属名：五层龙属 Salacia

《中国植物志》第46卷008页
  10.五层龙
  Salacia prinoides（Willd.） DC. in Prod, 1: 571. 1824, C. J. Pitard in Pl. Gen. L’Indo-Chine Tome 1: 905. 1907-1912, Merr in Lingnan Sri. Journ.14: 27. 1935,海南植物志2: 443. 1965,高等植物图鉴2:图3107. 1972.——Tontelea prinoides Willd. in Ges. Naturf. Fr. Neue Schr. 4: 184. 1803.
  攀援灌木，长达4米。小枝具棱角.叶革质，椭圆形或窄卵圆形或倒卵状椭圆形，长(3-)5-11厘米，宽(1-5-)2-5厘米，顶端钝或短渐尖，边缘具浅钝齿。叶面光亮，干时表面橄揽绿色，背面褐绿色，侧脉6-7对，叶柄长约0.8-1厘米。花小，3-6朵簇生于叶腋内的瘤状突起体上；花柄长6-10毫米；萼片5，三角形，长约0.5毫米，宽达1毫米，边缘具纤毛；花瓣5.阔卵形，长约3毫米，广展或外弯，顶端圆形；花盘杯状，高约1毫米；雄蕊3,花丝短，扁平,着生于花盘边缘，药室叉开，子房藏于花盘内，3室，胚珠每室2颗；花柱极短，圆锥形。浆果球形或卵形，直径仅1厘米.成熟时红色，有1颗种子；果柄长约6.5毫米。花期12月，果期翌年1-2月。
  产于广东。生于海拔60-700米的丛林中。印度、斯里兰卡、缅甸、老挝、越南、柬埔寨、马来西亚、印度尼西亚（爪哇）以及菲律宾等地均有分布。
  根供药用。有祛风除湿、通经活络之效。

《Flora of China》 Vol. 11 (2008)
Salacia chinensis  Linnaeus
五层龙   wu ceng long
Salacia prinoides (Willdenow) Candolle; Tontelea pri noides Willdenow.
Climbing shrubs, to 4 m tall; branchlets angular. Petiole 8-10 mm; leaf blade elliptic, narrowly ovate-rotund or obovate-elliptic, (3-)5-11 × (1.5-)2-5 cm, leathery, abaxially brown-green when dry, adaxially shiny olive-green, base cuneate, margin sparsely denticulate, apex subacute to shortly acuminate; lateral veins 6 or 7 pairs. Fascicles axillary, 3-6-flowered; pedicel 6-10 mm. Sepals deltoid, up to 1 mm, margin ciliolate; petals broadly ovate, ca. 3 mm, broadly spreading or curved outward, apex rounded. Disk cupular, ca. 1 mm tall. Stamens 3; filaments short, flat, inserted at margin of disk; anthers forked. Ovary concealed in disk, 3-loculed; ovules 2 per locule; style very short, conic. Berry globose or ovate, ca. 1 cm in diam., red when ripe, 1-seeded. Fl. Dec, fr. Jan-Feb.
Forests; below 100-700 m. Guangdong, Guangxi [Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Sri Lanka, Thailand, Vietnam].
The roots of this species have medicinal uses, including normalizing menstruation and invigorating circulation.