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DCP-LETT-1674

From:
Charles Robert Darwin
To:
Asa Gray
Date:
25 Apr [1855]
Source of text:
Archives of the Gray Herbarium, Harvard University (1)
Summary:

Is collecting facts on variation; questions AG on the alpine flora of the U. S.

Sends a list of plants from AG’s Manual of botany [1848] and asks him to append the ranges of the species.

Contributor:
Darwin Correspondence Project

DCP-LETT-2065

From:
Hewett Cottrell Watson
To:
Asa Gray
Date:
13 Mar 1857
Source of text:
DAR 181: 36
Summary:

Describes problems of classifying species in highly variable genera. Lists highly variable genera. Comments on the list of Asa Gray. Says species may be made to appear more or less variable according to whether a genus is divided into few or many species.

Contributor:
Darwin Correspondence Project
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