| Title | Variation and covariation among floral traits within and among four species of northern European Primula (Primulaceae) |
| Publication Type | Journal Article |
| Year of Publication | 1993 |
| Authors | Mazer, Susan J., and Ulla-Maj Hultgård |
| Journal | American Journal of Botany |
| Volume | 80 |
| Pagination | 474–485 |