Fifty-five annotated references are added to the bibliography of literature on Iowa bryophytes. The references treat taxonomic, ecologic, physiologic, and phytogeographic reports on Iowa mosses, liverworts, and hornworts. The status of lowa bryology is compared to bryology in the other states of the Upper Midwest and Great Plains. The Iowa bryophyte flora now consists of 342 bryophytes, including 277 mosses, 63 liverworts, and 3 hornworts. A total of 153 reports to the study of Iowa bryophytes have now been located and annotated
