心葉異藥花,拉丁文名:Fordiophyton cordifolium C. Y. Wu ex C. Chen. 野牡丹科、野海棠屬草本,高約70厘米;莖四棱形,肉質,無毛,棱上具狹翅,無分枝。葉片紙質或近膜質,心形或卵狀心形,頂端廣漸尖或急尖,基部心形,最外側的兩條極不明顯,兩面密布細小淡黃色腺點,其餘無毛,葉面基出脈及側脈微凹,背面脈隆起,細脈疏網狀;葉柄肉質,基部無瘤,藥隔不伸延;子房半下位,倒卵形,頂端具膜質冠,冠緣4淺圓裂。果未詳。花期3-4月。
與“心葉異藥花 Fordiophyton cordifolium C. Y. Wu ex C. Chen”相關的種有: 異藥花Fordiophyton faberi Stapf 肥肉草Fordiophyton fordii (Oliv.) Krasser 肥肉草(原變種)Fordiophyton fordii (Oliv.) Krasser var. fordii 毛柄肥肉草(變種)Fordiophyton fordii (Oliv.) Krasser var. pilosum C. Chen 光萼肥肉草(變種)Fordiophyton fordii (Oliv.) Krasser var. vernicinum Hand.-Mazz. 長柄異藥花Fordiophyton longipes Y. C. Huang ex C. Chen 多花肥肉草Fordiophyton multiflorum C. Chen 勁枝異藥花Fordiophyton strictum Diels