A New Synonym of Dilutineuron Corrugatum (Grimmiaceae, Bryophyta) from Japan

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The type material of Racomitrium canescens (Hedw.) Brid. fo. erythrophyllum Sakurai from Japan is taxonomically evaluated. This form perfectly falls within the range of variation of Dilutineuron corrugatum (Bednarek-Ochyra) Bednarek- Ochyra, Sawicki, Ochyra, Szczecińska & Plášek and, accordingly, R. canescens fo. erythrophyllum is reduced to synonymy with this species name.

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