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Darwin, C. R. in addressee 
Gray, Asa in author 
1860-1869::1861 in date 
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DCP-LETT-3242

From:
Asa Gray
To:
Charles Robert Darwin
Date:
27 and 29 Aug 1861 and 2 Sept 1861
Source of text:
DAR 110 (ser. 2): 76
Summary:

Gives some observations on the sensitivity of Drosera species and comments on cases of "dioecio-dimorphism".

Contributor:
Darwin Correspondence Project

DCP-LETT-3282

From:
Asa Gray
To:
Charles Robert Darwin
Date:
11 Oct 1861
Source of text:
DAR 109: 82–3, DAR 110 (ser. 2): 117, DAR 111: 83
Summary:

Notes several cases of "dioecio-dimorphism" in different genera; feels the discovery of pollen that will act only on the pistil of another flower is most important. Believes CD should next turn his attention to investigating cases of "precocious fertilisation".

Contributor:
Darwin Correspondence Project

DCP-LETT-3313

From:
Asa Gray
To:
Charles Robert Darwin
Date:
9 Nov 1861
Source of text:
DAR 110 (ser. 2): 63–4
Summary:

Discusses observations of his own and of John Torrey on dimorphism, especially in Amsinckia.

Is trying to find specimens of Houstonia for CD.

Contributor:
Darwin Correspondence Project

DCP-LETT-3354

From:
Asa Gray
To:
Charles Robert Darwin
Date:
31 Dec 1861
Source of text:
DAR 110 (ser. 2): 65, DAR 165: 104–105
Summary:

Discusses dimorphism and suggests CD investigate Valeriana.

Praises CD’s views with respect to the U. S. Civil War and relations with England. Worsening relations between Britain and U. S.

Contributor:
Darwin Correspondence Project
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