"Remusatia yunnanensis" (H. Li & A. Hay) A. Hay is a herbaceous species which has thus far been considered endemic to Yunnan, China. In this study, we document the discovery of this species in Nantou County, Taiwan. "R. yunnanensis" is similar to "Remusatia vivipara" (Lodd.) Schott and only distinguishable by the difference in spathe limb color. "R. yunnanensis" exhibits a distinct purple red spathe limb color while that of "R. vivipara" is yellow. The description and illustration of "R. yunnanensis", including a dichotomous key description for "Remusatia" in Taiwan are provided in the present study.