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From J. O. Westwood 26 September 1861
Summary
Has found the reference to Charles Morren’s paper, "On the agency of insects in causing sterility in flowers" [Proc. R. Entomol. Soc. Lond. 1 (1836): xliv–xlv].
Common white butterflies remove pollen-masses with their tarsi from plants of the Asclepiadaceae.
| Author: | John Obadiah Westwood |
| Addressee: | Charles Robert Darwin |
| Date: | 26 Sept 1861 |
| Classmark: | DAR 181: 89 |
| Letter no: | DCP-LETT-3267 |
Author
| Westwood, J. O. | (1) |
Addressee
| Darwin, C. R. | (1) |
Correspondent
| Darwin, C. R. | (1) |
| Westwood, J. O. | (1) |
