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多裂鱼黄草Merremia dissecta

时间:2013-09-05 13:07来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):多裂鱼黄草 学名( Scientific Name ): Merremia dissecta (Jacq.) Hallier f. 英文名( English Common Name ): noyau vine 别名( Chinese Common Name ): 异名( Synonym ): Ipomoea sinuata Ortega Operculina dissec
中文名(Chinese Name):多裂鱼黄草
学名(Scientific Name):Merremia dissecta (Jacq.) Hallier f.
英文名(English Common Name):noyau vine
别名(Chinese Common Name):
异名(Synonym):Ipomoea sinuata Ortega  Operculina dissecta (Jacq.) House  Convolvulus palmatus Mill.
科属(Family & Genus):旋花科(Convolvulaceae)鱼黄草属
形态特征(Description): 茎缠绕、细长,圆柱形,具条纹,被开展的黄色硬毛,成长的部分木质化,近于无毛并具瘤。叶掌状分裂近达基部,具5-7披针形的、具小短尖头的、边缘具粗齿至不规则的羽裂片,两面无毛或背面脉上被毛,中裂片长2.5-10厘米,宽0.5-3厘米,侧裂片较小;叶柄长2.5-7厘米,毛被同茎。花序梗腋生,1至少花,长5-10厘米,明显被开展的硬毛,上部近无毛;花梗长1.5-2厘米,向上部稍变粗,无毛,顶端具小瘤;花芽狭卵形,锐尖;萼片近相等,长2-2.5厘米,卵状披针形,锐尖,具小短尖头,无毛,具狭的干膜质的边缘,果时增大,革质;花冠漏斗状,长3-3.5厘米,白色,喉部紫红色,冠檐具5条明显的带,带上具脉;花药螺旋扭曲;子房无毛,2室。蒴果球形,无毛,2室,4瓣裂。种子通常4,无毛,黑色
分布(Distribution):原产美洲,在非洲、东南亚至澳大利亚已归化。
用途(Use):
引自中国植物志英文版FOC Vol. 16 Page 294      
Merremia dissecta (Jacquin) H. Hallier, Bot. Jahrb. Syst. 16: 552. 1893.
多裂鱼黄草 duo lie yu huang cao | Convolvulaceae  | Merremia
Convolvulus dissectus Jacquin, Obs. Bot. 2: 4. 1767; Ipomoea dissecta (Jacquin) Persoon; I. sinuata Ortega; Operculina dissecta (Jacquin) House.
Twiners, semi-woody; axial parts ± yellowish spreading hirsute. Stems woody basally, tuberculate, glabrescent, herbaceous when young. Petiole 2.5-7 cm; leaf blade palmately 5-7-divided nearly to base; segments lanceolate, middle 2.5-10 X 0.5-3 cm, lateral ones smaller, glabrous or pubescent along veins abaxially, margin coarsely dentate to irregularly pinnately lobed, apex mucronulate. Inflorescences 1- to several flowered; peduncle 5-10 cm. Pedicel 1.5-2 cm, thicker distally, minutely tuberculate, glabrous. Sepals ovate-lanceolate, subequal, 2-2.5 cm, enlarged and leathery in fruit, glabrous, margin narrowly scarious, apex acute, mucronulate. Corolla white, with purple-red throat, funnelform, midpetaline bands distinct. Anthers spirally twisted. Ovary glabrous. Capsule globose, glabrous, 2-loculed. Seeds black, glabrous. 2n = 30, 32.
Cultivated and escaped. Guangdong [India, Indonesia, ?Myanmar, Pakistan, Sri Lanka, ?Thailand; native in North and South America].








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