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狗牙花Tabernaemontana divaricata

时间:2013-07-16 10:17来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):狗牙花 学名( Scientific Name ): Tabernaemontana divaricata (L.) R.Br. ex Roem. Schult. 英文名( English Common Name ): pinwheelflower 别名( Chinese Common Name ): 白狗牙、豆腐花 异名 ( Synonym ): Ervata






中文名(Chinese Name):狗牙花
学名(Scientific Name):Tabernaemontana divaricata (L.) R.Br. ex Roem. & Schult.
英文名(English Common Name):pinwheelflower
别名(Chinese Common Name):白狗牙、豆腐花
异名Synonym):Ervatamia divaricata (Linn.) Burk.;Ervatamia flabelliformis Tsiang;Ervatamia coronaria (Jacq.) Stapf;Nerium coronarium Jacquem.;Tabernaemontana coronaria (Jacq.) Willd.;Tabernaemontana flabelliformis (Tsiang) P. T. Li;Ervatamia divaricata var. plena (Roxb. ex Voigt) M.R.Almeida;Ervatamia recurva (Roxb. ex Lindl.) Lace;Ervatamia siamensis (Warb. ex Pit.) Kerr;Kopsia cochinchinensis Kuntze;Jasminum zeylanicum Burm.f.;Nyctanthes acuminata Burm.f.;Reichardia grandiflora Dennst.;Reichardia jasminoides Dennst.;Taberna discolor (Sw.) Miers;Tabernaemontana coronaria var. plena Roxb. ex Voigt;Tabernaemontana discolor Sw.;Tabernaemontana siamensis Warb. ex Pit.;Tabernaemontana gratissima Lindl.;Tabernaemontana lurida Van Heurck & Müll.Arg.;Testudipes recurva (Roxb. ex Lindl.) Markgr.;Vinca alba Noronha
科属Family & Genus):夹竹桃科(Apocynaceae)狗牙花属
形态特征Description):灌木,通常高达3米,除萼片有缘毛外,其余无毛;枝和小枝灰绿色,有皮孔,干时有纵裂条纹;节间长1.5-8厘米。腋内假托叶卵圆形,基部扩大而合生,长约2毫米。叶坚纸质,椭圆形或椭圆状长圆形,短渐尖,基部楔形,长5.5-11.5厘米,宽1.5-3.5厘米,叶面深绿色,背面淡绿色;侧脉12对,在叶面扁平,在背面略为凸起;叶柄长0.5-1厘米。聚伞花序腋生,通常双生,近小枝端部集成假二歧状,着花6-10朵;总花梗长2.5-6厘米;花梗长0.5-1厘米;苞片和小苞片卵状披针形,长2毫米,宽1毫米;花蕾端部长圆状急尖;花萼基部内面有腺体,萼片长圆形,边缘有缘毛,长3毫米,宽2毫米;花冠白色,花冠筒长达2厘米;雄蕊着生于花冠筒中部之下;花柱长11毫米,柱头倒卵球形。蓇葖长2.5-7厘米,极叉开或外弯;种子3-6个,长圆形。花期6-11月,果期秋季。花冠重瓣。花期6-11月,果期秋季。
分布(Distribution):栽培于我国南部各省区。
用途(Use):
引自中国植物志英文版FOC Vol. 16 Page 153
Tabernaemontana divaricata (Linnaeus) R. Brown ex Roemer & Schultes, Syst. 4: 427. 1819.
狗牙花 gou ya hua | Apocynaceae  | Tabernaemontana
Nerium divaricatum Linnaeus, Sp. Pl. 1: 209. 1753; Ervatamia coronaria (Jacquin) Stapf; E. divaricata (Linnaeus) Burkill; E. flabelliformis Tsiang; N. coronarium Jacquin; Tabernaemontana coronaria (Jacquin) Willdenow; T. flabelliformis (Tsiang) P. T. Li.
Shrubs or small trees 0.5-5 m tall, glabrous. Petiole 3-10 mm; leaf blade elliptic or narrowly so, 3-18 X 1-6 cm, apex acuminate; lateral veins 5-17 pairs. Cymes dichotomous, 1-8-flowered; bracts scalelike. Flower buds with an ovoid head, apex acute or obtuse. Calyx lobes often ciliate. Corolla white, tube 1.5-2.7 cm; lobes simple or double, obovate or broadly so, 1.5-2.7 X 0.8-2 cm. Stamens inserted at basal third of corolla tube. Follicles obliquely and narrowly ellipsoid, 2-7 X 0.6-1.5 cm. Fl. Apr-Sep, fr. Jul-Nov. 2n = 22*.
Montane brushwoods, sparse forests; 100-1600 m. S Yunnan (cultivated in Fujian, Guangdong, Guangxi, Hainan, Taiwan, Yunnan) [Bangladesh, Bhutan, India, Myanmar, Nepal, Thailand; cultivated in tropical and subtropical Asia].
All parts of the plant are poisonous. The roots, leaves, and flowers are used in Guangdong and Guangxi against snake and scorpion poisoning. In modern medicine, the roots are used to treat hypertension, headache, and scabies.

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