To Asa Gray 25 April [1855]
Summary
Is collecting facts on variation; questions AG on the alpine flora of the U. S.
Sends a list of plants from AG’s Manual of botany [1848] and asks him to append the ranges of the species.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 25 Apr [1855] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (1) |
| Letter no: | DCP-LETT-1674 |
From Asa Gray 22 May 1855
Summary
Has filled up CD’s paper [see 1674].
Distribution and relationships of alpine flora in U. S.
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 22 May 1855 |
| Classmark: | DAR 106: D1–D2 |
| Letter no: | DCP-LETT-1685 |
To Asa Gray 8 June [1855]
Summary
Suggests AG append ranges to the species in the new edition of his Manual.
Is interested in comparing the flora of U. S. with that of Britain and wishes to know the proportions to the whole of the great leading families and the numbers of species within genera. Would welcome information on which species AG considers to be "close" in the U. S.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 8 June [1855] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (2) |
| Letter no: | DCP-LETT-1695 |
From Asa Gray 30 June 1855
Summary
Sends a list of "close" species from his Manual of botany.
Hopes Hooker or CD will write an essay on species. Discusses some of the difficulties of defining botanical species.
| Author: | Asa Gray |
| Addressee: | Charles Robert Darwin |
| Date: | 30 June 1855 |
| Classmark: | DAR 165: 92a |
| Letter no: | DCP-LETT-1707 |
To Asa Gray 21 July [1855]
Summary
Geographical distribution. "Close" species. Hopes AG will write an essay on species.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 21 July [1855] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (3) |
| Letter no: | DCP-LETT-1725 |
To Asa Gray 24 August [1855]
Summary
"Close" species in large and small genera.
Alphonse de Candolle on geographical distribution [Géographie botanique raisonnée (1855)].
Species variability.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 24 Aug [1855] |
| Classmark: | Archives of the Gray Herbarium, Harvard University (10) |
| Letter no: | DCP-LETT-1749 |
| letter | (6) |
| Darwin, C. R. | (4) |
| Gray, Asa | (2) |
| Gray, Asa | (4) |
| Darwin, C. R. | (2) |
| Darwin, C. R. | (6) |
| Gray, Asa | (6) |
