A New Record of Festuca probatovae (Poaceae), a Previously Neglected Species in the Japanese Flora

Abstract

Festuca probatovae E.B.Alexeev (Poaceae) was formally described based on the specimens collected from Sakhalin and Japan in 1982. However, the species has been neglected in the floristic literature in Japan. In 2019, we collected specimens in Mt. Chubetsudake, Taisetsu Mountains, Hokkaido, Japan, that we identified as F. probatovae mainly based on the structure of leaf transverse sections. Here, we report the new locality for the species in Japan and provide a morphological description and a new Japanese name for the species.