東亞地區大葉馬兜鈴複合群(Aristolochia kaempferi complex)之系統分類研究

Aristolochia kaempferi group (Aristolochia subgen. Isotrema, Aristolochiaceae), including A. cucurbitifolia, A. heterophylla, A. hohuanensis, A. kaempferi var. kaempferi, A. kaempferi var. tanzawana, A. liukiuensis, A. mollis, A. mollissima, A. onoei and A. shimadae, is very controversial in taxonomy. According to reviewing the protologues, types of previously published names, field observation, and distribution information, a taxonomic revision of Aristolochia kaempferi group is given. Perianth limb, flower color and, especially, perianth-tube shape are considered as useful taxonomic characters. Combined the total evidences, A. heterophylla, A. mollis, A. neolongifolia and A. onoei are separated from A. kaempferi and treated as distinct species, so the typical A. kaempferi is regarded as a Japanese endemic species; A. hohuanensis and A. shimadae are treated as synonymous, and a new variety, A. shimadae var. palmata from Taiwan, is described and illustrated in this study. We provide the nomenclatural and taxonomic notes for each taxon and a key in aid to identify the taxa of this group.