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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

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
Document type
Author
Darwin, C. R.disabled_by_default
Addressee
Correspondent
Darwin, C. R.disabled_by_default
Drummond, James (a)disabled_by_default
Date
1860 (3)