RECORD: Darwin, C. R. 1879.12.01-1880.01.07. Geranium richardsoni / Sleep of cotyledon. CUL-DAR209.9.21. 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).
[page] [21]
Dec 1st — 1879. 10°30' P.m
Geranium richardsoni = ericanthus
─ cinereum—
In neither sp. any distinct & uniform bending down of cotyledons, but observed under rather unfavourable circumstances as raised in hot-House in winter.—
Dec 13th 10° 40' P.m— examined above 2 species again— no plain change in position of Cots; nor in G. sub-caulescens.—
Dec. 26 G. Endressii, cinereum, T.? Abericum sub-caulescens, Richardsonii at 10° 15' P.m, after bright day, no trace of sleep.
Jan 7th 1880 none asleep.
(Sleep of cotyledon)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022