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Darwin, C. R. in addressee 
1860-1869::1866 in date 
Hildebrand, Friedrich in correspondent 
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From:
Friedrich Hermann Gustav (Friedrich) Hildebrand
To:
Charles Robert Darwin
Date:
11 May 1866
Source of text:
DAR 166: 203
Summary:

Sending his paper on tristyly in Oxalis.

Cannot attend botanical congress, where CD will be vice-president.

Contributor:
Darwin Correspondence Project
From:
Friedrich Hermann Gustav (Friedrich) Hildebrand
To:
Charles Robert Darwin
Date:
24 July 1866
Source of text:
DAR 166: 204; DAR 49: 150
Summary:

Assures CD of his belief in descent from his first reading of Origin.

Describes a case of dichogamy.

Contributor:
Darwin Correspondence Project
From:
Friedrich Hermann Gustav (Friedrich) Hildebrand
To:
Charles Robert Darwin
Date:
23 Oct 1866
Source of text:
DAR 166: 205
Summary:

Explains dichogamy in Aristolochia. C. K. Sprengel was wrong.

Contributor:
Darwin Correspondence Project