Contributions from the United States National Herbarium
| Fformat: | Electronig Cylchgrawn |
|---|---|
| Iaith: | Saesneg |
| Cyhoeddwyd: |
Department of Botany, Smithsonian Institution
|
| Pynciau: | |
| Mynediad Ar-lein: | Full text available on JSTOR[1890-01-01 - 2011-01-01] |