Mosses and Liverworts of Iowa

In 1945 I published three papers on the Atracheata (Bryophytes) of Iowa in The Bryologist, vol. 48:I. The species and the counties from which they were known, with the herbaria in which specimens could be seen. II. Names that have been published but were not recognized in my list, and why not. III. Papers on the subject, with notes about the authors. Since that time several additional species have been collected in the State, many new county records have been made, some misidentifications are to be corrected, and some changes in names must be made. As I am not likely to see additional collections from Iowa, it seems right to present a corrected list at this time