| Publication Type: | Journal Article |
| Year of Publication: | 1920 |
| Authors: | N. L. Britton |
| Journal: | Memoirs of the Torrey Botanical Club |
| Volume: | 16 |
| Start Page: | 57 |
| Pagination: | 57-118 |
| Date Published: | 09/1920 |
| URL: | http://www.biodiversitylibrary.org/item/98629#page/75/mode/1up |
| Alternate Journal: | Mem. Torrey Bot. Club |
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