To James Drummond 16 May 1860
Summary
Asks JD to observe Leschenaultia formosa to verify CD’s hypothesis of how it is fertilised. Also suggests an experiment to determine whether it is fertilised by nocturnal insects.
Author: | Charles Robert Darwin |
Addressee: | James Drummond |
Date: | 16 May 1860 |
Classmark: | J. S. Battye Library of Western Australian History, State Library of Western Australia (Accession 2275A) |
Letter no: | DCP-LETT-2803 |
From James Drummond 17 September 1860
Summary
Reports observations on the fertilisation of Goodeniaceae, and particularly Leschenaultia. [See 2992.]
Author: | James Drummond |
Addressee: | Charles Robert Darwin |
Date: | 17 Sept 1860 |
Classmark: | DAR 157a |
Letter no: | DCP-LETT-2920A |
From James Drummond 8 October 1860
Summary
Observations of Brunonia and a case of a malvaceous flower, which never opened and was self-fertilised.
Author: | James Drummond |
Addressee: | Charles Robert Darwin |
Date: | 8 Oct 1860 |
Classmark: | DAR 162.2: 242 |
Letter no: | DCP-LETT-2944 |
To James Drummond 22 November [1860]
Summary
JD’s letter of 17 Sept about Leschenaultia not seeding is surprising. CD’s experiments point to insects which, though perhaps not indispensable to their fertilisation, are useful to it. Would like to know whether the flower of Leschenaultia is visited by bees or other insects.
JD’s offer to send seeds of Distylis and the other genus is of greatest possible interest.
Author: | Charles Robert Darwin |
Addressee: | James Drummond |
Date: | 22 Nov [1860] |
Classmark: | J. S. Battye Library of Western Australian History, State Library of Western Australia (Accession 2275A) |
Letter no: | DCP-LETT-2992 |
To James Drummond 20 December [1860]
Summary
Responds to JD’s letter [2944]. Would like to know whether bees extract pollen from within the indusium of Leschenaultia. He suspects they brush over and partly open the indusium while sucking nectar from the flower.
Asks also about malvaceous plant that set seed although its flower never opened.
Has been watching the achenia of the plant sent by JD and, if Hooker agrees, will publish a note on it ["Achenia of Pumilio argyrolepis", Collected papers 2: 36–8].
Author: | Charles Robert Darwin |
Addressee: | James Drummond |
Date: | 20 Dec [1860] |
Classmark: | J. S. Battye Library of Western Australian History, State Library of Western Australia (Accession 2275A) |
Letter no: | DCP-LETT-3026 |
Darwin, C. R. | (3) |
Drummond, James (a) | (2) |
Drummond, James (a) | (3) |
Darwin, C. R. | (2) |
1860 | (5) |