1. Ferns: Facts and Fancies about Them: VIII Author Corne, F. E. Published 1926 Full Text View/download PDF
2. Psilotum nudum Spreading Northward Author Morton, C. V. Published 1970 Full Text View/download PDF
3. Stem Cross-Section Prints Aid in Identifying Horsetails Author Gudmundson, Barbara J. Published 1970 Full Text View/download PDF