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Breitenbach, Wilhelm in correspondent 
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From:
Wilhelm Breitenbach
To:
Charles Robert Darwin
Date:
26 July 1876
Source of text:
DAR 111: B50–4; DAR 160: 290
Summary:

Observations on pollinia of Orchis maculata

and on Primula elatior. [On latter, see Forms of flowers, p. 34.]

Contributor:
Darwin Correspondence Project
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From:
Wilhelm Breitenbach
To:
Charles Robert Darwin
Date:
11 Sept 1876
Source of text:
DAR 160: 292
Summary:

His research on Orchis maculata.

Discusses effect of disuse of anthers in Salvia officinalis.

Pleased CD can use his observations on Primula elatior.

Contributor:
Darwin Correspondence Project
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From:
Wilhelm Breitenbach
To:
Charles Robert Darwin
Date:
19 Sept 1877
Source of text:
DAR 160: 291
Summary:

Describes data relating to variability of Primula elatior.

Contributor:
Darwin Correspondence Project
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From:
Wilhelm Breitenbach
To:
Charles Robert Darwin
Date:
17 Apr 1879
Source of text:
DAR 160: 293
Summary:

Observations on unusual mating behaviour of canaries.

Contributor:
Darwin Correspondence Project
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