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Gray, Asa in addressee 
1860-1869::1864 in date 
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From:
Charles Robert Darwin
To:
Asa Gray
Date:
25 Feb [1864]
Source of text:
Gray Herbarium of Harvard University (80)
Summary:

Has not worked for six months due to illness.

Has been looking at climbing plants.

Hermann Crüger’s paper shows that CD was right about Catasetum pollination. Crüger’s account of pollination of Coryanthes "beats everything".

Contributor:
Darwin Correspondence Project
From:
Charles Wright
To:
Asa Gray
Date:
20, 25 and 26 Mar 1864 and 1 Apr 1864
Source of text:
DAR 181: 163
Summary:

Describes the flower and mode of action of a particular orchid.

Has been examining Spiranthes and is experimenting to see whether insects are necessary for its fertilisation.

It seems that Oncidium is designed so as not to be fertilised.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Asa Gray
Date:
28 May [1864]
Source of text:
Gray Herbarium of Harvard University (79)
Summary:

Is slowly writing Lythrum paper [Collected papers 2: 106–31].

Thanks for [Charles?] Wright’s observations on orchids

– could he note what attracts insects to Begonia and Melastoma? H. Crüger, who was going to observe Melastomataceae, has died.

Describes the climbing habits of Bignonia capreolata and Eccremocarpus scaber.

How does AG know the perfect flowers of Voandzeia are quite sterile?

He has a case of dimorphism in holly; asks AG to report on American hollies.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Asa Gray
Date:
13 Sept [1864]
Source of text:
Gray Herbarium of Harvard University (89)
Summary:

Has finished Climbing plants;

resuming work on Variation.

Sends abstract of John Scott’s paper [see 4332].

Has received review of Herbert Spencer but cannot believe AG wrote it unless he has muddled his brains with metaphysics.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Asa Gray
Date:
29 Oct [1864]
Source of text:
Gray Herbarium of Harvard University (88)
Summary:

Sends question [missing] for an ornithologist.

Is plodding on at Variation.

Has added to Climbing plants.

Contributor:
Darwin Correspondence Project