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马银花Rhododendron ovatum

时间:2013-09-09 11:45来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 马银花 学名( Scientific Name ): Rhododendron ovatum (Lindl.) Planch. ex Maxim. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Rhododendron ovatum var. setuliferum M. Y. H
中文名(Chinese Name):马银花
学名(Scientific Name):Rhododendron ovatum (Lindl.) Planch. ex Maxim.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Rhododendron ovatum var. setuliferum M. Y. He  Azalea ovata Lindl.  Rhododendron ovatum var. prismatum Tam  Rhododendron lamprophyllum Hayata  Rhododendron ovatum var. lamprophyllum (Hayata) Y. C. Liu et al.
科属(Family & Genus):杜鹃花科(Ericaceae)杜鹃属
形态特征(Description):常绿灌木,高2-4(-6)米;小枝灰褐色,疏被具柄腺体和短柔毛。叶革质,卵形或椭圆状卵形,长3.5-5厘米,宽1.9-2.5厘米,先端急尖或钝,具短尖头,基部圆形,稀宽楔形,上面深绿色,有光泽,中脉和细脉凸出,沿中脉被短柔毛,下面仅中脉凸出,侧脉和细脉不明显,无毛;叶柄长8毫米,具狭翅,被短柔毛。花芽圆锥状,具鳞片数枚,外面的鳞片三角形,内面的鳞片长圆状倒卵形,长1厘米,宽0.8厘米,先端钝或圆形,边缘反卷,具细睫毛,外面被短柔毛。花单生枝顶叶腋;花梗长0.8-1.8厘米,密被灰褐色短柔毛和短柄腺毛;花萼5深裂,裂片卵形或长卵形,长4-5毫米,宽3-4毫米,外面基部密被灰褐色短柔毛和疏腺毛,边缘无毛;花冠淡紫色、紫色或粉红色,辐状,5深裂,裂片长圆状倒卵形或阔倒卵形,长1.6-2.3厘米,内面具粉红色斑点,外面无毛,筒部内面被短柔毛;雄蕊5,不等长,稍比花冠短,长1.5-2.1厘米,花丝扁平,中部以下被柔毛;子房卵球形,密被短腺毛蕨花柱长2.4厘米,伸出于花冠外,无毛。蒴果阔卵球形,长8毫米,直径6毫米,密被灰褐色短柔毛和疏腺体,且为增大而宿存的花萼所包围。花期4-5月,果期7-10月。
分布(Distribution):产江苏、安徽、浙江、江西、福建、台湾、湖北、湖南、广东、广西、四川和贵州。生于海拔1000米以下的灌丛中。
用途(Use):本种在广西作药用,用根与水、酒、肉同煎,白糖冲服,可治白带下黄浊水。
引自中国植物志英文版FOC Vol. 14 Page 423
Rhododendron ovatum (Lindley) Planchon ex Maximowicz, Bull. Acad. Imp. Sci. Saint-Pétersbourg. 15: 230. 1871.
马银花 ma yin hua | Apiaceae  | Rhododendron
Azalea ovata Lindley, J. Hort. Soc. London 1: 149. 1846; Rhododendron lamprophyllum Hayata; R. ovatum var. lamprophyllum (Hayata) Y. C. Liu; R. ovatum var. prismatum P. C. Tam; R. ovatum var. setuliferum M. Y. He.
Shrubs, 2–4(–6) m tall; young shoots sparsely glandular-hairy and pubescent. Petiole ca. 8 mm, narrowly winged, pubescent; leaf blade ovate to oblong-elliptic, 3.5–5 × 1.9–2.5 cm; base rounded or rarely broadly cuneate; margin slightly curved; apex acute and mucronate; adaxial surface glabrous or pubescent; lateral and net veins inconspicuous abaxially. Inflorescence subapical, 1-flowered. Pedicel 0.8–1.8 cm, densely gray-brown pubescent, also with short glandular hairs; calyx deeply lobed; lobes ovate or oblong-ovate, 4–5 × 3–4 mm, densely gray-brown pubescent, also sparsely glandular hairy at base abaxially, margin glabrous; corolla rotate, purplish, purple, or pink, with purple flecks inside tube, 1.6–2.3 cm, outer surface glabrous, inner surface puberulent; lobes oblong-obovate or broadly obovate; stamens 5, unequal, 1.5–2.1 cm, slightly shorter than corolla, filaments flat, pubescent in lower half; ovary ovoid, with dense short glandular hairs; style ca. 2.4 cm, exserted, glabrous. Capsule broadly ovoid, ca. 8 × 6 mm, densely gray-brown pubescent, also sparsely glandular. Fl. Apr–May, fr. Jul–Oct.
Thickets; 300–1600 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Taiwan, Zhejiang.
Gao Lianming (pers. comm.) notes that recent field studies have shown that the differences used to separate var. setuliferum from the type of the species, namely the narrower leaf blade and the style with dense bristles near the base, are not even borne out by the type of this variety, and in any case these features vary continuously between the two varieties.




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