形态特徵
多年生攀援草本。根粗壮而长，圆柱形，弯曲。叶互生，卵状心形， 长3-10厘米，宽2-9厘米，先端钝圆，基部近心形。花单生叶腋，花梗长3-7厘米，被黄褐色绒毛，中部以下有1圆形膜质叶状苞片，长约2厘米，有细毛，花萼管黄色，长约4厘米，外面被长绒毛，中部收缩而急转为弯曲呈U
异叶马兜铃相关物种
滇南马兜铃Aristolochia austroyunnanensis Hwang
长叶马兜铃Aristolochia championii Merr. & Chun
瓜叶马兜铃Aristolochia cucurbitifolia Hayata
广防己Aristolochia fangchi Y. C. Wu ex L. D. Chow & Hwang
黄毛马兜铃Aristolochia fulvicoma Merr. & Chun
西藏马兜铃Aristolochia griffithii Hook.f. & Thoms. ex Duch.
南粤马兜铃Aristolochia howii Merr. & Chun
大叶马兜铃Aristolochia kaempferi Willd.
大叶马兜铃(原变型)Aristolochia kaempferi Willd. form. kaempferi
奇异马兜铃(变型)Aristolochia kaempferi Willd. form. mirabilis Hwang
川西马兜铃(变型)Aristolochia kaempferi Willd. form. thibetica (Franch.) Hwang
广西马兜铃Aristolochia kwangsiensis Chun & F. C. How ex S. Y. Liang
木通马兜铃Aristolochia manshuriensis Kom.
寻骨风Aristolochia mollissima Hance
宝兴马兜铃Aristolochia moupinensis Franch.
偏花马兜铃Aristolochia obliqua Hwang
革叶马兜铃Aristolochia scytophylla Hwang & D. Y. Chen
变色马兜铃Aristolochia versicolor Hwang
香港马兜铃Aristolochia westlandii Hemsl.
云南马兜铃Aristolochia yunnanensis Franch.
小花马兜铃(变种)Aristolochia yunnanensis Franch. var. meionantha Hand.-Mazz.
云南马兜铃(原变种)Aristolochia yunnanensis Franch. var. yunnanensis
