From R. I. Lynch [September 1877 or later]1
Mem.
Haematoxylon
The cotyledons are subject to sleep as perfectly as the leaves
It is also the case with some other Leguminosae
—ex Cassia2
CD annotations
3.1 The … Cassia 5.1] scored blue crayon; ‘not sensitive’ blue crayon
End of letter: ‘Mr Lynch’ pencil
Footnotes
The date range is established by the period in which CD worked on movement in cotyledons (see Correspondence vol. 25, letter to R. I. Lynch, 14 September 1877).
CD received a specimen of Haematoxylon campechianum (a synonym of Haematoxylum campechianum, logwood) from Kew in 1877 (see Correspondence vol. 25, letter from W. T. Thiselton-Dyer, 25 July 1877). He discussed the nocturnal movement of its leaves in Movement in plants, pp. 368–9; however, he credited Lynch with observations of cotyledons (ibid., p. 300). On the sleep of cotyledons in Cassia, see Correspondence vol. 25, letter to R. I. Lynch, 14 September 1877).
Bibliography
Correspondence: The correspondence of Charles Darwin. Edited by Frederick Burkhardt et al. 29 vols to date. Cambridge: Cambridge University Press. 1985–.
Movement in plants: The power of movement in plants. By Charles Darwin. Assisted by Francis Darwin. London: John Murray. 1880.
Summary
Cotyledon sleep movement in Haematoxylon.
Letter details
- Letter no.
- DCP-LETT-11385
- From
- Richard Irwin Lynch
- To
- Charles Robert Darwin
- Sent from
- unstated
- Source of text
- DAR 209.9: 110
- Physical description
- AMem 1p †
Please cite as
Darwin Correspondence Project, “Letter no. 11385,” accessed on 24 April 2024, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-11385.xml
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