Flora of North America Vol 27. Bryophytes: Mosses, part I

713 pp. The first of 3 volumes on the Bryophyte flora and the first treament of them in the FNA series. This volume covers most of the acrocarpous mosses. Giiven the need for the examination of many anatomical details in identification of bryophytes the illustrations are complex and dense. The introductory chapter on morphology explains many features of the illustrations.