| Publication Type: | Journal Article |
| Year of Publication: | 1987 |
| Authors: | A. Graham |
| Journal: | American Journal of Botany |
| Volume: | 74 |
| Pagination: | 1519-1531 |
| Type of Article: | Journal Article |
| ISSN: | 0002-9122 |
| URL: | <Go to ISI>://WOS:A1987K354500007 |
| DOI: | 10.2307/2444046 |