轮环藤Cyclea racemosa Oliv.

别名：青藤;山豆根;青藤香;良藤;滾天龙;青木香;滚天龙;大蛇参;小青藤;白解藤;毛木香;小青藤香;白木香;青藤细辛;轮生藤;轮环芚;百解藤;防巳;钻骨风;

科名：防己科 Menispermaceae

属名：轮环藤属 Cyclea

《中国植物志》第30(1)卷077页
  5. 轮环藤（植物分类学报）
  Cyclea racemosa Oliv. in Hook. Ic. Pl. t. 1938. 1890; Diels in Engler, Pflanzenreich IV. 94: 318. 1910; Chun in Sunyatsenia 4: 177. 1940; Yamamoto in Taiwania 1: 62. 1948; 广东植物志1: 45. 1987.
  藤本。老茎木质化，枝稍纤细，有条纹，被柔毛或近无毛。叶盾状或近盾状，纸质，卵状三角形或三角状近圆形，长4-9厘米或稍过之，宽约3.5-8厘米，顶端短尖至尾状渐尖，基部近截平至心形，全缘，上面被疏柔毛或近无毛，下面通常密被柔毛，有时被疏柔毛；掌状脉9-11条，向下的4-5条很纤细，有时不明显，连同网状小脉均在下面凸起；叶柄较纤细，比叶片短或与之近等长，被柔毛。聚伞圆锥花序狭窄，总状花序状，密花，长3-10厘米或稍过之，花序轴较纤细，密被柔毛，分枝长通常不超过1厘米，斜升；苞片卵状披针形，长约2毫米，顶端尾状渐尖，背面被柔毛；雄花：萼钟形，4深裂几达基部，2片阔卵形，长2.5-4毫米，宽2-2.5毫米，2片近长圆形，宽约1.8-2毫米，均顶部反折；花冠碟状或浅杯状，全缘或2-6深裂几达基部；聚药雄蕊长约1.5毫米，花药4个；雌花：萼片2或1（很可能是另一片脱落），基部囊状，中部缢缩，上部稍扩大而反折，长1.8-2.2毫米；花瓣2或1，微小，常近圆形，直径约0.6毫米；子房密被刚毛，柱头3裂。核果扁球形，疏被刚毛，果核直径约3.5-4毫米，背部中肋两侧各有3行圆锥状小凸体，胎座迹明显球形。花期4-5月，果期8月。
形态特征：缠绕藤本。老茎有螺旋状扭转条纹，粗糙，皮孔明显，呈乳头状突起，嫩枝疏生白色长柔毛。叶互生，三角状卵形或心形，长4-10厘米，宽3-6厘米，先端渐尖，叶柄盾状着生，长3-4厘米，有白色柔毛。花淡黄色，排列成总状花序，雌雄异株，雄花近于无柄，雌花萼裂较小。核果球形，直
用    途：根药用，有清热、理气、止痛功效，主治急性胃肠炎、消化不良、腹痛、胃痛。
分    布：产九冲、松柏。
生    境：生长在海拔650-1300米的山坡灌木丛中或阴沟边。

《Flora of China》 Vol. 7 (2008)
Cyclea racemosa  Oliver Hooker’s Icon. Pl. 20: t. 1938. 1890.
轮环藤   lun huan teng
Cyclea racemosa f. emeiensis H. S. Lo & S. Y. Zhao.
Vines, woody when old. Branches slender, striate, puberulent or subglabrous. Petiole slender, shorter than or subequal to lamina, puberulent; leaf blade peltate or subpeltate, ovate-triangular or triangular-rotund, 4-9 × 3.5-8 cm or slightly longer, papery, abaxially usually densely puberulent and sometimes pilose, adaxially sparsely puberulent or subglabrous, base subtruncate to cordate, margin entire, apex mucronate to caudate-acuminate, palmately 9-11-veined, together with fine reticulation prominent abaxially. Inflorescences narrowly thyrsoid, densely flowered, 3-10 cm or longer; rachis slender, densely puberulent, branched part less than 1 cm; bracts ovate-lanceolate, ca. 2 mm, apex caudate-acuminate, puberulent abaxially. Male flowers: calyx mitriform, 4-lobed almost to base, 2 lobes broadly ovate, 2.5-4 × 2-2.5 mm, apex inflexed, 2 lobes suboblong, 1.8-2 mm wide, apex inflexed; corolla cup-shaped or shallowly cup-shaped, margin entire or 2-6-lobed almost to base; synandrium ca. 1.5 mm, anthers 4. Female flowers: sepals 1 or 2, base saccate, middle part contracted, 1.8-2.2 mm, apex slightly expanded and inflexed; petals 1 or 2, minute, often rotund, ca. 0.6 mm in diam.; ovary densely bristled, stigma 3-lobed. Drupes oblate, sparsely bristled; endocarp 3.5-4 mm in diam., abaxially bearing 3 rows of conical tubercles; condyle conspicuously globose. Fl. Apr-May, fr. Aug.
● Forests, forest margins, shrublands. Fujian, N Guangdong, C and N Guizhou, W Hubei, Hunan, Jiangxi, ?S Shanxi, C, E, and SE Sichuan, S Zhejiang.
The name Cyclea racemosa f. emeiensis (峨眉轮环藤 e mei lun huan teng) has been applied to material from around Emei Shan with glabrous mature leaves.The name Cyclea racemosa f. emeiensis (峨眉轮环藤 e mei lun huan teng) has been applied to material from around Emei Shan with glabrous mature leaves.

【拼音名】 Lún Huán Ténɡ
【别名】 百解藤、须龙藤、牵藤暗消
【来源】 防己科轮环藤Cyclea polypetala Dunn，以根、叶入药。
【生境分布】 云南。
【性味】 苦，寒。
【功能主治】 清热解毒，利尿止痛。主治咽喉炎，白喉，扁桃体炎，尿路感染及结石，牙痛，胃痛，风湿骨痛。外用治痈疮，无名肿毒，毒蛇咬伤。
【用法用量】 0.3～5钱。外用适量捣烂敷患处。
【摘录】 《全国中草药汇编》