Search: letter in document-type 
Darwin, C. R. in addressee 
1860-1869::1864::03::12 in date 
Sorted by:

Showing 11 of 1 item

From:
Daniel Oliver
To:
Charles Robert Darwin
Date:
12 Mar 1864
Source of text:
DAR 157.2: 103
Summary:

Discusses homologies of plant organs.

The passion-flower tendril should be considered a modified branch rather than a modified flower. Considers the distinction between the peduncle and the leaf midrib.

Contributor:
Darwin Correspondence Project
thumbnail