To Asa Gray 1 July [1862]
Summary
Thanks for notes on Cypripedium and Platanthera hookeri, which is really beautiful and quite a new case.
His son, George, has been observing the insect fertilisation of orchids.
CD has been crossing peloric flowers of Pelargonium, but doubts he will get good results with respect to sterility of hybrids.
Rhexia glandulosa does not appear to be dimorphic. Lythrum is trimorphic.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 1 July [1862] |
| Classmark: | Gray Herbarium of Harvard University (69) |
| Letter no: | DCP-LETT-3634 |
To Asa Gray 22 January [1862]
Summary
Dimorphism: "new cases are tumbling in almost daily".
U. S. politics.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 22 Jan [1862] |
| Classmark: | Gray Herbarium of Harvard University (74) |
| Letter no: | DCP-LETT-3404 |
Matches: 1 hit
- … B. Baillière. Marginalia : Charles Darwin’s marginalia. Edited by Mario A. Di Gregorio with the assistance of Nicholas W. Gill. Vol. 1. New York and London: Garland Publishing. 1990. Orchids : On the various contrivances by which British and foreign orchids are fertilised by insects, and on the good effects of intercrossing. By Charles Darwin. London: John Murray. …
Document type
| letter | (2) |
Author
| Darwin, C. R. | (2) |
Addressee
| Gray, Asa | (2) |
Correspondent
| Darwin, C. R. | (2) |
| Gray, Asa |
