2022 年 73 巻 2 号 p. 147-150
It is well documented that some mycoheterotrophic plants have distinct intraspecific color variations. Although a blackish brown color is typical of the mycoheterotrophic Gastrodia pubilabiata (Orchidaceae), a dark green variant from Aichi Prefecture, Japan, is reported here. The dark green variant differs from typical plants only in color. Therefore, a new form, G. pubilabiata f. viridis, is proposed.