Ecology: Submontane and montane forest; on rocks, trunk and branches of treelets and trees. Elevation: 900-3300 m (Venezuela: 2085-2100 m, Bolivia: 1100-3300 m, NW Argentina: 900 m) Distribution: Mexico, Central America (Costa Rica, Honduras, Nicaragua), Brazil, Bolivia and Argentina.
Ecología: Bosques submontanos y montanos; sobre rocas y árboles. Elevación: 900-3300 m (Venezuela: 2085-2100 m, Bolivia: 1100-3300 m, NO Argentina: 900 m) Distribución: México, Centroamérica (Costa Rica, Honduras, Nicaragua), Brasil, Bolivia y Argentina.
Brachymenium radiculosum is distinguished by the narrowly obovate leaves, long excurrent costa, conic operculum, and well developed endostomal segments and absence of cilia. This species is similar to B. consimile which has more broadly obovate leaves and reduced endostomal segments and cilia.