RECORD: Darwin, C. R. & Emma Darwin. n.d. Abstract of Duval-Jouve, Soc Bot Fr bull 14 February 1868. CUL-DAR209.3.329. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR209.3 contains materials for Darwin's book Movement in plants (1880).
Darwin cited this information in Movement in plants, p. 237. Joseph Duval-Jouve (1810-1883) was a French botanist.
[329]
Duval Jouve Bull Soc Bot de France Feb 14 1868
He took a shoot of Bryophyllum calycinum which had been injured by frost on Oct 5 & put it away in a cupboard. On Oct 20 he found buds growing on the edges of the leaves. By Nov 15 there were young plants with 3 pair of simple leaves, the upper leaves 40mm in length, the middle leaves 15mm. On Nov 16 the distance between the tips of the upper pr of leaves on one plant was measured as below
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 January, 2023