RECORD: Darwin, C. R. 1879.06.02-03. Ipomœa purpurea. CUL-DAR209.9.24. 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).
[24]
Jun 2d 1879. Ipomœa purpurea — Cotyledons at 10°. 15' P.m some 30° & some 40° below horizon; & at noon they were horizontal
Cots of Pharbitis nil = Ip. cærulea were less declined 25° & 30° & some hardy at all. —
3d 8° a.m. the Cots of I. purpurea still declined, (I had better say only that they do not fall nearly enough to be called sleep.)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022