Abstract
A new species, Neottia inagakii Yagame, Katsuy. & T. Yukawa, is described from the Tanzawa Mountains, Kanagawa Prefecture, Japan. Neottia inagakii is morphologically similar to N. kiusiana but can be distinguished by the smaller and nearly closed flower, the adaxially folded, 2- or 3-lobed epichile of the lip, the erect anther lacking a filament, and the cylindrical column.
