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桃金娘 Rhodomyrtus tomentosa

时间:2013-10-18 16:30来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):桃金娘 学名( Scientific Name ): Rhodomyrtus tomentosa (Aiton) Hassk. 英文名( English Common Name ): rose myrtle 别名( Chinese Common Name ): 岗棯 异名( Synonym ): Myrtus canescens Lour. Myrtus tomentos
中文名(Chinese Name):桃金娘
学名(Scientific Name):Rhodomyrtus tomentosa (Aiton) Hassk.
英文名(English Common Name):rose myrtle
别名(Chinese Common Name):岗棯
异名(Synonym):Myrtus canescens Lour.  Myrtus tomentosa Aiton  Cynomyrtus tomentosa (Aiton) Scriv. 
科属(Family & Genus):桃金娘科(Myrtaceae)桃金娘属
形态特征(Description):灌木,高1-2米;嫩枝有灰白色柔毛。叶对生,革质,叶片椭圆形或倒卵形,长3-8厘米,宽1-4厘米,先端圆或钝,常微凹入,有时稍尖,基部阔楔形,上面初时有毛,以后变无毛,发亮,下面有灰色茸毛,离基三出脉,直达先端且相结合,边脉离边缘3-4毫米,中脉有侧脉4-6对,网脉明显;叶柄长4-7毫米。花有长梗,常单生,紫红色,直径2-4厘米;萼管倒卵形,长6毫米,有灰茸毛,萼裂片5,近圆形,长4-5毫米,宿存;花瓣5,倒卵,形,长1.3-2厘米;雄蕊红色,长7-8毫米;子房下位,3室,花柱长1厘米。浆果卵状壶形,长1.5-2厘米,宽1-1.5厘米,熟时紫黑色;种子每室2列。花期4-5月。
分布(Distribution):产台湾、福建、广东、广西、云南、贵州及湖南最南部,生于丘陵坡地。南半岛、菲律宾、日本、印度、斯里兰卡、马来西亚及印度尼西亚等地也有。
用途(Use):根含酚类、鞣质等,有治慢性痢疾、风湿、肝炎及降血脂等功效。
引自中国植物志英文版:FOC Vol. 13 Page 331
Rhodomyrtus tomentosa (Aiton) Hasskarl, Flora. 25(Beibl.): 35. 1842.
桃金娘 tao jin niang | Myrtaceae  | Rhodomyrtus
Myrtus tomentosa Aiton, Hort. Kew. 2: 159. 1789; M. canescens Loureiro.
Shrubs, 1-2 m tall. Branchlets grayish tomentose. Leaves opposite; petiole 4-7 mm; leaf blade elliptic to obovate, 3-8 × 1-4 cm, leathery, pubescent when young but glabrescent and shiny with age, abaxially gray tomentose, secondary veins 1 on each side of midvein, originating near leaf blade base, and meeting at apex, tertiary veins 4-6 on each side of midvein and connecting midvein to secondary veins, reticulate veins obvious, intramarginal veins 3-4 mm from margin, base broadly cuneate, apex rounded to obtuse and often slightly emarginate or sometimes slightly apiculate. Flowers 1[-3], stipitate, 2-4 cm in diam. Hypanthium obovoid, ca. 6 mm, gray tomentose. Calyx lobes 5, subrounded, 4-5 mm, persistent. Petals 5, violet, obovate, 1.3-2 cm. Stamens red, 7-8 mm. Ovary 3(or 4)-loculed. Style ca. 1 cm. Berry purplish black when mature, urceolate, 1.5-2 × 1-1.5 cm. Fl. Apr-May.
Coppices, mountain slopes, low hills, grasslands. Fujian, Guangdong, Guangxi, Guizhou, S Hunan, Jiangxi, Taiwan, S Yunnan, Zhejiang [Cambodia, India, Indonesia, Japan (Ryukyu Islands), Laos, Malaysia, Myanmar, Philippines, Sri Lanka, Vietnam].






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