From Asa Gray [1 April 1880]
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | [1 Apr 1880] |
Classmark: | DAR 209.6: 203 |
Letter no: | DCP-LETT-12556 |
From Asa Gray 4 April 1880
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | 4 Apr 1880 |
Classmark: | DAR 209.6: 204–6 |
Letter no: | DCP-LETT-12562 |
To Asa Gray 19 April 1880
Summary
Thanks for the letter from Volney Rattan [see 12553].
Discusses protective adaptation of seedlings from frost.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 19 Apr 1880 |
Classmark: | University of California, Berkeley, The Bancroft Library (BANC MSS 74/78 z) |
Letter no: | DCP-LETT-12582 |
From Asa Gray 3 July 1880
Summary
Confirmation of CD’s idea: AG planted seeds Ipomœa pandurata. One seed has come up and its germination is same as of I. leptophylla.
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | 3 July 1880 |
Classmark: | DAR 186: 52 |
Letter no: | DCP-LETT-12646F |
From Asa Gray 29 July [1880]
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | 29 July [1880] |
Classmark: | DAR 186: 53 |
Letter no: | DCP-LETT-12674F |
From Asa Gray 27 January 1881
Summary
Apologises for his silence when Francis Darwin’s paper was read at the Linnean Society.
AG’s review of Movement in plants [Nation 32 (1881): 17–18].
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | 27 Jan 1881 |
Classmark: | DAR 165: 203 |
Letter no: | DCP-LETT-13028 |
To Asa Gray 29 January 1881
Summary
Thanks for AG’s reviews [of Movement in plants] in the Journal and Nation [Am. J. Sci. 3d ser. 21 (1881): 245–9 and Nation 32 (1881): 17–18], especially for AG’s comment about Frank Darwin.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 29 Jan 1881 |
Classmark: | Gray Herbarium of Harvard University (130b) |
Letter no: | DCP-LETT-13031 |
To Asa Gray 29 January [1875]
Summary
Asks AG to forward [unspecified] enclosure to Chauncey Wright.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 29 Jan [1875] |
Classmark: | DAR 153: 165 |
Letter no: | DCP-LETT-13813 |
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
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 |
To Asa Gray 2 May [1856]
Summary
Suggests affinities of the U. S. flora that he considers would be worth investigating. Wants to know the ranges of species in large and small genera.
Questions AG on naturalised plants; whether any are social in U. S. which are not so elsewhere and how variable they are compared with indigenous species. Would like to know of any differences in the variability of species at different points of their ranges and also the physical states of plants at the extremes of their ranges.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 2 May [1856] |
Classmark: | Archives of the Gray Herbarium, Harvard University (4) |
Letter no: | DCP-LETT-1863 |
To Asa Gray 14 July [1856]
Summary
Asks whether Allegheny Mountains are sufficiently continuous so that plants could travel from north to south along them.
Hopes AG’s work on geographical distribution is progressing, as he has questions on plants common to Europe which do not range up to Arctic.
Are intermediate varieties less numerous in individuals than the varieties they connect?
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 14 July [1856] |
Classmark: | Archives of the New York Botanical Garden (Charles Finney Cox Collection) |
Letter no: | DCP-LETT-1926 |
From Asa Gray [early August 1856]
Summary
Believes intermediate varieties are generally less numerous in individuals than the two states that they connect.
Discusses the difficulties of deciding what is the typical form of a species
and gives some opinions on the variability of introduced species compared with indigenous species.
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | [early Aug 1856] |
Classmark: | DAR 165: 93 |
Letter no: | DCP-LETT-1934 |
To Asa Gray 24 August [1856]
Summary
Rarity of intermediate varieties.
Variability of introduced plants.
Ranges of plants common to Europe and U. S.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 24 Aug [1856] |
Classmark: | Archives of the Gray Herbarium, Harvard University (36) |
Letter no: | DCP-LETT-1944 |
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 |
To Asa Gray 12 October [1856]
Summary
Thanks AG for the first part of his "Statistics [of the flora of the northern U. S.", Am. J. Sci. 2d ser. 22 (1856): 204–32; 2d ser. 23 (1857): 62–84, 369–403]
and for information on social and varying plants.
Would like to know number of genera of introduced plants in U. S.
Is surprised at some affinities of northern U. S. flora and asks for any climatic explanations.
Asks what proportion of genera common to U. S. and Europe are mundane.
Is glad AG will work out the northern ranges of the European species and the ranges of species with regard to size of genera.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 12 Oct [1856] |
Classmark: | Archives of the Gray Herbarium, Harvard University (6) |
Letter no: | DCP-LETT-1973 |
letter | (269) |
Darwin, C. R. | (143) |
Gray, Asa | (126) |
Gray, J. L. | (1) |
Gray, Asa | (143) |
Darwin, C. R. | (126) |
Darwin, C. R. | |
Gray, Asa | (269) |
Gray, J. L. | (1) |