Critical notes on the genus Epipogium (Orchidaceae)
兰科虎舌兰属Epipogium种类增补与修订

The differences between Epipogium japonicum Makino and E. roseum (D. Don) Lindl. are discussed based on a specimen recently collected from western Sichuan. The plants from western Sichuan formerly identified as E. roseum are truly E. japonicum. This species is disjunctively distributed in Japan, alpine region of western Sichuan and Taiwan of China.