| Publication Type: | Journal Article |
| Year of Publication: | 1987 |
| Authors: | M. H. Grayum, Churchill H. W. |
| Journal: | American Fern Journal |
| Volume: | 77 |
| Pagination: | 73-89 |
| Type of Article: | Journal Article |
| ISSN: | 0002-8444 |
| URL: | <Go to ISI>://WOS:A1987M413300001 |
| DOI: | 10.2307/1547496 |