At the suggestion of Dr. E. L. Core, I undertook to examine the Juneaceae in the West Virginia University Herbarium. This collection was supplemented during the course of the study by loans kindly made by Dr. F. A. Gilbert, of Marshall College, and Prof. E. M. McNeill, of Concord State College, Athens, W. Va., from the herbaria of their institutions. Through the courtesy of Dr. Wm. R. Maxoni, I had access to the National Herbarium. Prof. M. L. Fernald and Dr. H. A. Gleason sought material in the Gray Herbarium and the New York Botanical Garden, respectively. Dr. F. J. Hermann patiently answered many questions concerning puzzling specimens and questions of nomenclature, and allowed me the use of his private herbarium. Deposition of specimens is indicated as follows: