Materials for the Distribution of Lichens in Japan (21) Toninia tristis subsp. fujikawae

Abstract

A new locality of Toninia tristis (Th. Fr.) Th. Fr. subsp. fujikawae (M. Satô) Timdal, an endangered endemic lichen growing on calcareous rocks in Japan, is reported from Nippara of Okutama in Tokyo Metropolis.

Meanwhile, it has been lost from Meshimoriyama on Mt. Buko in Saitama Prefecture due to extensive mining of limestone. Additional specimens collected from known localities and neighboring sites decades after the first collection suggest that many populations appear to be stable except in habitats subject to destructive practices such as limestone mining.