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掌叶鱼黄草Merremia vitifolia

时间:2013-09-05 11:07来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):掌叶鱼黄草 学名( Scientific Name ): Merremia vitifolia (Burm. f.) Hall. f. 英文名( English Common Name ): Convolvulus vitifolius Burm. f. Convolvulus angularis Burm. f. Ipomoea vitifolia (Burm. f.) Blume Ipo
中文名(Chinese Name):掌叶鱼黄草
学名(Scientific Name):Merremia vitifolia (Burm. f.) Hall. f.
英文名(English Common Name):Convolvulus vitifolius Burm. f.  Convolvulus angularis Burm. f.  Ipomoea vitifolia (Burm. f.) Blume  Ipomoea vitifolia var. angularis (Burm. f.) Choisy
别名Chinese Common Name):毛牵牛、假番薯
异名Synonym):
科属Family & Genus):旋花科(Convolvulaceae)鱼黄草属
形态特征Description):缠绕或平卧草本。茎带紫色,圆柱形,老时具条纹,被疏或密的平展的黄白色微硬毛,有时无毛。叶片轮廓近圆形,长(2-5-)5-15厘米,宽(2.5-)4-15.5厘米,基部心形,通常掌状5裂,有时3裂或7裂,裂片宽三角形或卵状披针形,顶端渐尖,锐尖或钝,基部不收缩或有时稍收缩,边缘具粗锯齿或近全缘,两面被平伏的长的黄白色微硬毛;叶柄长1-3(-19)厘米,毛被同茎。聚伞花序腋生,有1-3朵至数朵花,花序比叶长或与叶近等长,花序梗长2-5厘米,连同花梗、外萼片被黄白色开展的微硬毛;苞片小,钻形,花梗长1-1.6厘米,顶端增粗;萼片长圆形至卵状长圆形,长1.4-1.8厘米,顶端钝圆,具小短尖头,内萼片稍长,无毛,萼片至结果时显著增大,近革质,内面灰白色,有很多窝点;花冠黄色,漏斗状,长2.5-5.5厘米,无毛,冠檐具5钝裂片,瓣中带有5条显著的脉;雄蕊短于萼片,长约1.1厘米,花药螺旋扭曲;子房无毛。蒴果近球形,高约1.2厘米,果皮干后纸质,4瓣裂。种子4或较少,三棱状卵形,高约7毫米,黑褐色,无毛。
分布(Distribution):产广东、广西、云南,生于海拔90-1600米的路旁、灌丛或林中。东南亚也有。
用途(Use):
引自中国植物志英文版FOC Vol. 16 Page 295
Merremia vitifolia (N. L. Burman) H. Hallier, Bot. Jahrb. Syst. 16: 552. 1893.
掌叶鱼黄草 zhang ye yu huang cao| Convolvulaceae  | Merremia
Convolvulus vitifolius N. L. Burman, Fl. Indica 45. 1768; C. angularis N. L. Burman; Ipomoea vitifolia (N. L. Burman) Blume; I. vitifolia var. angularis (N. L. Burman) Choisy.
Herbs twining or prostrate; axial parts spreading hirsute with yellowish hairs, or glabrous. Stems purplish, terete, striate when old, to 4 m. Petiole 1-3(-19) cm; leaf blade circular in outline, (2.5-)5-18 X (2.5-)4-15.5 cm, base cordate, palmately (3-)5-7-angled or lobed; lobes broadly triangular or ovate-lanceolate, ± yellowish appressed hirtellous, abaxially more densely so, margin coarsely serrate or subentire, apex acuminate to obtuse. Inflorescences 1-3- or several flowered; peduncle 2-5(-15) cm; bracts subulate, 1.5-2 mm. Pedicel 1-1.6 cm, thicker distally. Sepals oblong or ovate-oblong, 1.4-1.8 cm, enlarged in fruit, ± leathery, ± shiny, pitted adaxially, pellucid glandular, apex obtuse or ± acute; outer 2 hirsute abaxially; inner ones glabrous. Corolla yellow, paler in tube, funnelform, 2.5-5.5 cm, glabrous outside; limb ± 5-angled. Stamens ca. 1.1 cm; anthers spirally twisted. Ovary glabrous. Capsule straw colored, ± globose, ca. 1.2 cm, papery. Seeds black-brown, trigonous-ovoid, ca. 7 mm, glabrous.
Roadsides, thickets, forests; (100-)400-1600 m. Guangdong, Guangxi, Hainan, Yunnan [India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam]
Used medicinally to treat bladder infections and stomach aches.
 





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