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To Asa Gray 20 March [1863]
Summary
Discusses the meaning of C. K. Sprengel’s term "dichogamy". Dichogamous plants are functionally monoecious; Primula is functionally dioecious.
Reports Hermann Crüger’s observations of Cattleya and of bees pollinating Catasetum. Crüger will observe Melastomataceae.
Has built a hothouse.
Fears Amsinckia cannot be dimorphic.
Ill health slows his work on Variation.
Author: | Charles Robert Darwin |
Addressee: | Asa Gray |
Date: | 20 Mar [1863] |
Classmark: | Gray Herbarium of Harvard University (58) |
Letter no: | DCP-LETT-4053 |
From Asa Gray 22–30 March 1863
Summary
Discusses the Duke of Argyll’s article on the supernatural [Edinburgh Rev. 116 (1862): 378–97].
Has heard that the Incas married their sisters; this may be worth investigating as a case of inbreeding.
Author: | Asa Gray |
Addressee: | Charles Robert Darwin |
Date: | 22–30 Mar 1863 |
Classmark: | DAR 165: 131 |
Letter no: | DCP-LETT-4056 |
Document type
letter | (2) |
Author
Darwin, C. R. | (1) |
Gray, Asa | (1) |
Addressee
Darwin, C. R. | (1) |
Gray, Asa | (1) |