RECORD: Darwin, C. R. & Emma Darwin. 1864.01.31. Tropaeolum tricolorum. CUL-DAR157.1.82. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2023. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here.
The volumes CUL-DAR157.1-2 contain notes, abstracts etc. for Darwin's long paper and later book Climbing plants (1865). It was also commercially available as a softbound offprint, F834, F834a. See R. B. Freeman's bibliographical introduction. Items CUL-DAR157.1.11-60 were in a folder marked "Twiners". Items CUL-DAR157.1.61-112 were in a folder marked "Leaf-climbers" and items CUL-DAR157.1.114-147 were in a folder marked "Tendrils". Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.
[82]
Trop. Tricol. Jan 31 1864
Tendrils very sensitive on upper & lower surface. Slightest rub made it into a circle. This t. had 5 little points at end. One moved in 30 seconds. One t. certainly moved spontaneously, but I doubt whether from side to side;— it merely reverted when old & clasped stick, so that all t. though rising at variable angles clasp stick— This movement like corkscrew of true tendrils.
These t. on summit of plant are new young leaves —
Branches move spontaneously like leading shoot— Lower t. drop off.
[82v]
Horace observed that plant climbed in Hot-house in one-way & then in other way. I see same fact in Greenhouse — Bears on reversed movement in Pea & echinocystis
A common twining plant could not do so.—
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 July, 2023