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萝藦Metaplexis japonica

时间:2013-07-16 14:38来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):萝藦 学名( Scientific Name ): Metaplexis japonica (Thunb.) Makino 英文名( English Common Name ): rough potato 别名( Chinese Common Name ): 奶合藤、老鸹瓢 异名( Synonym ): 科属( Family Genus ): 萝藦





中文名(Chinese Name):萝藦
学名(Scientific Name):Metaplexis japonica (Thunb.) Makino
英文名(English Common Name):rough potato
别名(Chinese Common Name):奶合藤、老鸹瓢
异名(Synonym):
科属(Family & Genus):萝藦科(Asclepiadaceae)萝藦属
形态特征(Description):多年生草质藤本,长达8米,具乳汁;茎圆柱状,下部木质化,上部较柔韧,表面淡绿色,有纵条纹,幼时密被短柔毛,老时被毛渐脱落。叶膜质,卵状心形,长5-12厘米,宽4-7厘米,顶端短渐尖,基部心形,叶耳圆,长1-2厘米,两叶耳展开或紧接,叶面绿色,叶背粉绿色,两面无毛,或幼时被微毛,老时被毛脱落;侧脉每边10-12条,在叶背略明显;叶柄长,长3-6厘米,顶端具丛生腺体。总状式聚伞花序腋生或腋外生,具长总花梗;总花梗长6-12厘米,被短柔毛;花梗长8毫米,被短柔毛,着花通常13-15朵;小苞片膜质,披针形,长3毫米,顶端渐尖;花蕾圆锥状,顶端尖;花萼裂片披针形,长5-7毫米,宽2毫米,外面被微毛;花冠白色,有淡紫红色斑纹,近辐状,花冠筒短,花冠裂片披针形,张开,顶端反折,基部向左覆盖,内面被柔毛;副花冠环状,着生于合蕊冠上,短5裂,裂片兜状;雄蕊连生成圆锥状,并包围雌蕊在其中,花药顶端具白色膜片;花粉块卵圆形,下垂;子房无毛,柱头延伸成1长喙,顶端2裂。蓇葖又生,纺锤形,平滑无毛,长8-9厘米,直径2厘米,顶端急尖,基部膨大;种子扁平,卵圆形,长5毫米,宽3毫米,有膜质边缘,褐色,顶端具白色绢质种毛;种毛长1.5厘米。花期7-8月,果期9-12月。
分布(Distribution):产东北、华北、华东及甘肃、陕西、贵州、河南及湖北等地,生于林边、河边或路旁等处。日本、朝鲜及俄罗斯也有。
用途(Use):全株可药用:果可治劳伤、虚弱、腰腿疼痛、缺奶、白带、咳嗽等;根可治跌打、蛇咬、疔疮、瘰疬、阳萎;茎叶可治小儿疳积、疔肿;种毛可止血;乳汁可除?子。茎皮纤维坚韧,可造人造棉。
引自中国植物志英文版FOC Vol. 16 Page 205      
Metaplexis japonica (Thunberg) Makino, Bot. Mag. (Tokyo). 17: 87. 1903.
萝藦 luo mo | Asclepiadaceae  | Metaplexis
Pergularia japonica Thunberg, Fl. Jap. 1: 11. 1784; Metaplexis chinensis Decaisne; M. stauntonii Schultes; Urostelma chinensis Bunge.
Lianas to 8 m. Young stems densely pubescent, glabrescent. Petiole 3-6 cm; leaf blade deep green adaxially, glaucous abaxially, ovate-cordate, basal lobes rounded, re-curved and sometimes overlapping, sinus 1-2 cm deep and often very narrow, glabrous or puberulent when young; lateral veins 10-12 pairs. Inflorescences usually 13-20-flowered; peduncle 6-12 cm; bracteoles membranous, lan-ceolate, ca. 3 mm. Pedicel ca. 8 mm, puberulent. Flower buds conical, apex acute. Sepals lanceolate, 5-7 × ca. 2 mm, pu-berulent. Corolla white, sometimes with purplish stripes; tube short; lobes lanceolate, slightly longer than sepals, spreading, reflexed at apex, conspicuously pilose inside. Stigma head conspicuously exserted, long and slender with 2-fid apex. Follicles fusiform, 8-9 × ca. 2 cm, smooth, gla-brous. Seeds ca. 5 × 3 mm, flat, margin membranous; coma silky white, ca. 1.5 cm. Fl. Jul-Aug, fr. Sep-Dec. 2n = 22, 24*.
Thickets, forest edges, stream banks. Throughout China except for Hainan and Xinjiang [Japan, Korea, adjacent Russia]
The stems and roots are used as medicine for traumatic injury, snake bites, impotence, and infantile malnutrition due to intestinal parasites.

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