This name is a synonym of Brachythecium buchananii (Hook.) A. Jaeger.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35115085) with original publication details: J. Siam Soc., Nat. Hist. Suppl. 9: 36 1932.
This name was in version 1 of The Plant List, record tro-35115085.