New Taxa and New Records of Bryophytes from Mexico and Central America

Abstract

Five new species of mosses, Barbula crassicuspis, Orthotrichum sharpii, Brachythecium delicatum, Isopterygium aquaticum, and Acritodon nephophilus, the last representing a new genus, and three new species of liverworts, Lejeunea halei, Pycnolejeunea dentata, and Cololejeunea linopteroides are described. Oreas mexicana is placed in a new subgenus, Pseudoreas, of the genus Hypnodontopsis. A new family, Rhachitheciaceae, is established for the genera Rhachithecium and Hypnodontopsis. Forsstroemia ohioensis is reported from Mexico and F. cuspidata (C. Miill.) Broth. of Paraguay is considered a synonym of it. The following records are based on collections made during short trips to Mexico by Mason E. Hale, Jr., A. J. Sharp, and myself. A few other collections of interest from Mexico, Honduras, and Costa Rica are also included. The specimens are in the U.S. National Herbarium. Duplicates of the Sharp collections are in the herbarium of the University of Tennessee.