RECORD: Darwin, C. R. n.d. Swedish turnip. CUL-DAR209.9.104. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2022. 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-DAR209.9 contains materials for Darwin's book Movement in plants (1880).
[104]
p. 299. my M.S Wilson— Swedish turnip— Breadth (or area) of leaves decreases, as estimated by him, 30 per cent of diurnal area—
area exposed to sky thus nearly 1/3 less.—
[Movement in plants, p. 230: "We may add that, according to Mr. A. Stephen Wilson,* the young leaves of the Swedish turnip, which is a hybrid between B. oleracea and rapa, draw together in the evening so much 'that the horizontal breadth diminishes about 30 per cent. of the daylight breadth.' Therefore the leaves must rise considerably at night.
* 'Trans. Bot. Soc. Edinburgh,' vol. xiii. p. 32."]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 24 August, 2023