From:
Charles Robert Darwin
To:
Roland Trimen
Date:
27 Aug [1863]
Source of text:
Royal Entomological Society (Trimen papers, box 21: 57)
Summary:
Discusses methods of pollination in orchids.
Thinks RT should investigate Physianthus to see if it requires insect aid for fertilisation as the Asclepiadaceae do.
Contributor:
Darwin Correspondence Project