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To Roland Trimen 27 August [1863]
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.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 27 Aug [1863] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 57) |
Letter no: | DCP-LETT-4279 |