From:
Hewett Cottrell Watson
To:
Charles Robert Darwin
Date:
10 Mar 1857
Source of text:
DAR 181: 35
Summary:
HCW is trying to define what CD means by "variable" genera.
Contributor:
Darwin Correspondence Project
Showing 1–4 of 4 items
HCW is trying to define what CD means by "variable" genera.
Sends a reference to Subularia which bears on a query CD made some time ago [see 2002]. Subularia was seen to flower in the air in a remarkably dry season.
Will shortly return CD’s list of varieties of British plants. Discusses the situations in which different varieties of species are often found and the ranges of varieties relative to those of the species.
Finds he cannot annotate CD’s list of subspecies and varieties as wanted. Mentions again his difficulties with "species"; he "cannot find the proof of species being definite and immutable whatever they may seem to be at any one time and spot".