RECORD: Darwin, C. R. 1879.03.31-04.07. Trifolium repens / Trifolium pratense / Trifolium incarnatum. CUL-DAR209.9.68. 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).
[68]
March 31' 1879 10° 45' P.m
Trifolium repens & pratense cotyledons not closed T. incarnatum much raised, but not closed (see to this again)
April 2d last night long petioles quite closed, during day slightly divergent; blades of cots, curved outwards & during day almost horizontal, at night much raised so that chord of the cots 38° form vertical, or 52° ✓ above horizon— doubtful whether to be called sleep. [sketch] chord.
April 7th 10° P.m. The Cotyledons are now very nearly vertical as is first true leaf.─
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022