| Publication Type: | Journal Article |
| Year of Publication: | 1931 |
| Authors: | C. Christensen |
| Journal: | Contributions from the United States National Herbarium. Smithsonian InstitutionContributions from the United States National Herbarium. Smithsonian Institution |
| Volume: | 26 |
| Start Page: | 265 |
| Pagination: | 265-337 |
| Short Title: | Contr. U.S. Natl. Herb. |