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 |
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 |
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 |
