Ferns of Utah

The distribution of many species of our ferns is not well known in Utah. Collectors have centered their work around certain localities and many blank spots appear on the distributional map. One might presume certain species to be present in some of these unexplored areas but specimens are still to be collected. Distributional data beyond Utah were taken mainly from Broun's Index to North American Ferns. In citing the collections for each species the name of the collector or herbarium is given followed by the catalog numbers and localities. B. Y. designates the herbarium of Brigham Young University at Provo, and I. H. indicates the Intermountain Herbarium at the Utah State Agricultural College at Logan, Utah. Specimens collected by W. P. Cottam, A. M. Woodbury and S. Flowers are deposited in the University of Utah Herbarium. I wish to acknowledge the use of the specimens collected by Professors A. 0 . Garrett, Bertram Harrison and Bassett Maguire and their associates. Many of the specimens examined were identified by Dr s. William R. Maxon, R. T. Clausen, F. K. Butters, K. M. Weigand and J. H. Schaffner.