Search: Darwin, C. R. in author 
1850-1859::1858::02 in date 
Harvard University, Archives of the Gray Herbarium in repository 
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From:
Charles Robert Darwin
To:
Asa Gray
Date:
21 Feb [1858]
Source of text:
Archives of the Gray Herbarium, Harvard University (21)
Summary:

Asks whether botanists tend to record varieties more carefully in large genera or small genera.

Wants information on the ranges of varieties of a species compared to the range of the species.

Contributor:
Darwin Correspondence Project