Abstract

Didymodon fortunatii Cardot & Ther. and Hymenostylium diversirete Broth. ex Hand.-Mazz. were previously known only from type collections and both placed into synonymy with Reimersia inconspicua (Griff.) P.-C.Chen when a new monospecific genus Reimersia P.-C.Chen was established. While the plants markedly resemble each other in general appearance and growth habit, a careful review of cellular architecture across the lamina has now identified several character states that differ significantly between them. The nomenclatural history of Reimersia has basically remained unchanged since its generic establishment in 1940. A new combination as Reimersia diversiretis (Broth. ex Hand.-Mazz.) Shevock, W.Z.Ma, S.He & D.G.Long is proposed and the genus Reimersia now contains two species endemic to Asia.

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