Abstract
Nomenclatural novelties include 12 new combinations in Schizomitrium and Tristichium apodum (Herz.) stat. nov. (basonym: T. lorentzii var. apodum); Dicranella calcarea (Bartr.) comb. nov. (basonym: as Dicranoweisia calcarea) (Guatemala); Cynodontium quatemalense (Bartr.) comb. nov. (basonym: Oncophorus guatemalensis) (Guatemala); Thuidium delicatulum var. peruvianum (Mitt.) stat. nov. (basonym: T. peruvianum); Barbula jacksharpii sp. nov. (Guatemala); Lepyrodon duellii sp. nov. (Mexico); CURVIRAMEA gen. nov. and C. mexicana (Ther.) comb. nov. (basonym: Pilotrichum mexicanum (Mexico); CALLICOSTACEAE nom. nov. for Pilotrichaceae; RIGODIACEAE n. fam.; Bryohaplocladium praelongum (Schimp ex. Besch.) comb. nov. (basonym: Pseudoleskea praelonga) (Arizona [USA] to Bolivia); Thuidium sharpii sp. nov. (Mexico and Guatemala); Pylaisiadelpha brasiliensis sp. nov. (Brazil). Diplostichum Mont. should replace Eustichia (Brid.) C.M. Meiothecium commutatum and Ptychomitrium chimborazense are recorded as new to Mexico, and Acritodon nephophilus has peristome segments alternating with the teeth.