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微甘菊Mikania micrantha

时间:2013-07-23 13:18来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):微甘菊 学名( Scientific Name ): Mikania micrantha Kunth 英文名( English Common Name ): mile-a-minute 别名( Chinese Common Name ): 小花蔓泽兰 异名( Synonym ): Mikania alata (G.Mey.) DC. Kleinia alata G.





中文名(Chinese Name):微甘菊
学名(Scientific Name):Mikania micrantha Kunth
英文名(English Common Name):mile-a-minute
别名(Chinese Common Name):小花蔓泽兰
异名(Synonym):Mikania alata (G.Mey.) DC.  Kleinia alata G.Mey.  Willoughbya micrantha (Kunth) Rusby  Mikania denticulata (Vahl) Willd.  Eupatorium denticulatum Vahl  Mikania glechomaefolia Sch.Bip. ex Baker  Mikania subcymosa Gardner  Mikania subcrenata Hook. & Arn.  Mikania umbellifera Gardner  Mikania orinocensis Kunth  Eupatorium orinocense (Kunth) M.Gómez  Mikania sinuata Rusby  Eupatorium orinocense var. batataefolium (DC.) M.Gómez  Eupatorium orinocense var. tamoides (DC.) M.Gómez  Mikania micrantha f. hirsuta (Hieron.) B.L.Rob.  Mikania scandens var. hirsuta Hieron.  Mikania scandens var. subcymosa (Gardner) Baker  Mikania scandens var. umbellifera (Gardner) Baker  Mikania scandens var. villosa Hieron.  Willoughbya scandens var. orinocensis (Kunth) Kuntze
科属(Family & Genus):菊科(Compositae)假泽兰属
形态特征(Description):多年生草质或木质藤本,茎细长,匍匐或攀缘,多分枝,被短柔毛或近无毛,幼时绿色,近圆柱形,老茎淡褐色。茎中部叶三角状卵形至卵形,基部心形,偶近戟形,先端渐尖,边缘具数个粗齿或浅波状圆锯齿,两面无毛,基出3~7脉;叶柄长2.0~8.0 cm;上部的叶渐小,叶柄亦短,头状花序多数,在枝端常排成复伞房花序状,花序渐纤细,顶部的头状花序花先开放,依次向下逐渐开放,头状花序长4.5~6.0 mm,含小花4朵,全为结实的两性花,总苞片4枚,狭长椭圆形,顶端渐尖,部分急尖,绿色,长2~4.5mm,总苞基部有一线状椭圆形的小苞叶(外苞片),长1~2mm,花有香气;花冠白色,脊状,长3~3.5(-4)mm,檐部钟状,5齿裂,瘦果长1.5~2.0mm,黑色,被毛,具5棱,被腺体,冠毛有32~38(-40)条刺毛组成,白色,长2~3.5(-4) mm。
分布(Distribution):原产中南美洲,在我国已成为入侵植物。
用途(Use):
引自中国植物志英文版FOC Vol. 20-21 Page 879, 881
Mikania micrantha Kunth in Humboldt et al., Nov. Gen. Sp. 4, ed. f°: 105. 1818.
微甘菊 wei gan ju | Asteraceae  | Mikania
Vines, slender, branched. Stems yellowish or brownish, usually terete, slightly striate, glabrate to sparsely puberulent. Leaves opposite; petiole 1-6 cm; blade ovate, 3-13 × ca. 10 cm, both surfaces glabrate with numerous glandular spots, base cordate to deeply so, margin entire to coarsely dentate, apex shortly acuminate. Synflorescence a corymbose panicle, capitula clustered on subcymose branches; phyllaries oblong, ca. 3.5 mm, glabrous to puberulent, apex shortly acuminate; corollas white, 2.5-3 mm, tube narrow, limb broadly campanulate, inside papillate. Achenes 1.5-2 mm, 4-ribbed, with many scattered glands; pappus setae dirty white, ca. 3 mm. Fl. and fr. year-round. 2n = 36, 72.
Naturalized in China [native to the Caribbean, Central and South America, and Mexico; widely introduced in Asia and the Pacific islands].

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