RECORD: Darwin, C. R. 1880.01.28. Heliotrops — Transverse. CUL-DAR209.7.141. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2022. 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 volumes CUL-DAR209.7-8 contain notes on heliotropism (phototropism) for Darwin's book Movement in plants (1880).
[141]
Jan 28 80—
Heliotrops — Transverse
Going over Chapter—
Cots. of Ipomœa cærulea not heliotropic— those of Anoda— only slightly so, & they sink down at night when grow grown old, but not while while very Young — So with with Gossypium.
Cannabis sativa another perplexity. — Cots are certainly heliotropic & yet tips curve becomes downwards, as suggest believe by Kraus
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022