Darwin Online Manuscript Catalogue
| Identifier: | CUL-DAR15.2.21,21a-21b |
| Date: | 1856.05.15 |
| Name: | Darwin Charles Robert |
| Attributed title: | In Dr Grays manual there are 689 genera with 2004 species subtracting the |
| Description: | Gray, Asa. 1856. Manual of the botany of the northern United States: second edition; including Virginia, Kentucky, and all east of the Mississippi: arranged according to the natural system. New York: George P. Putnam. |
| Document type: | Note |