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To Asa Gray 4 December 1876
Summary
Plans to republish his paper on dimorphism with additions [Forms of flowers]. Is convinced it is necessary to compare pollen-grains and the state of the stigma to recognise dimorphic plants. Requests specific plants to test for dimorphism and would welcome examples from any family in which he has not encountered dimorphic species.
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 4 Dec 1876 |
| Classmark: | Archives of the Gray Herbarium of Harvard University (115) |
| Letter no: | DCP-LETT-10697 |
To Asa Gray 20 December 1876
Summary
Thanks for information about Hottonia.
Has found dimorphism in Forsythia.
Considers AG’s arguments on different terms for dimorphism, but cannot change to using the proposed new term [see 10699].
| Author: | Charles Robert Darwin |
| Addressee: | Asa Gray |
| Date: | 20 Dec 1876 |
| Classmark: | Archives of the Gray Herbarium of Harvard University (116) |
| Letter no: | DCP-LETT-10728 |
