From:
Hewett Cottrell Watson
To:
Charles Robert Darwin
Date:
13 Aug 1855
Source of text:
DAR 98: A5–A6, DAR 9: 15A
Summary:
Is having difficulties marking close species on the list of British plants.
In all his attempts to advance geographical botany he is stopped by the "application and signification of the word ""species"" " the use of which is both "indefinite and variable". He encloses his list of "Categories of Species".
Contributor:
Darwin Correspondence Project
