Grimmia texicana sp. nov. (Grimmiaceae) from Texas and its separation from Grimmia arizonae

Abstract Grimmia texicana, a new moss species from Texas and the American southwest, is described. The species is related to G. arizonae but its dense matted habit is distinctly different, readily separating it from the latter species, even in the field. Sporophytes were not found. Grimmia texicana propagates by young shoots, arising from the rhizoids.