Welsh Ferns, Clubmosses, Quillworts, and Horsetails, a Descriptive Handbook
Morton, C. V. (Conrad Vernon) 1905-1972 Hyde, H A Wade, A. E. (Arthur Edward), 1895-1989 Harrison, S G
Article
1970
American fern journal
60
84--86
BioStor
English
[Washington, etc.] American Fern Society
BioStor: https://biostor.org/reference/218407 DOI: https://doi.org/10.2307/1546937