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From:
Charles Robert Darwin
To:
John Stevens Henslow
Date:
23 [Aug or Sept] 1855
Source of text:
DAR 93: A112–13
Summary:

Asks JSH to identify an umbellifer.

Describes his efforts to compare number of seeds of wild and cultivated plants.

Asks that more wild celery be collected and seeds counted. Seeks to verify whether "most typical form produces most seed" and whether cultivation lessens fertility.

Contributor:
Darwin Correspondence Project
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From:
Hewett Cottrell Watson
To:
Charles Robert Darwin
Date:
23 Aug 1855
Source of text:
DAR 181: 29
Summary:

Close species in large and small genera.

Artificiality of botanical classification.

Contributor:
Darwin Correspondence Project