From Asa Gray 23 September 1856
Summary
Plants that are social in the U. S. but are not so in the Old World.
Distribution of U. S. species common to Europe.
Gives Theodor Engelmann’s opinion on the relative variability of indigenous and introduced plants and notes the effects of man’s settlement on the numbers and distribution of indigenous plants.
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 23 Sept 1856 |
| Classmark: | DAR 165: 94 |
| Letter no: | DCP-LETT-1959 |
Document type
| letter | (1) |
Author
| Gray, Asa | (1) |
Addressee
| Darwin, C. R. | (1) |
Correspondent
| Darwin, C. R. | (1) |
| Gray, Asa | (1) |
