| Publication Type: | Journal Article |
| Year of Publication: | 1991 |
| Authors: | B. Hammel, Burger W. G. |
| Journal: | Annals of the Missouri Botanical Garden |
| Volume: | 78 |
| Pagination: | 89-95 |
| Type of Article: | Journal Article |
| ISSN: | 0026-6493 |
| URL: | <Go to ISI>://WOS:A1991EZ73000008 |
| DOI: | 10.2307/2399594 |