RECORD: Darwin, C. R. & Emma Darwin. 1864.02.06. Bignonia unguis main peduncles of leaves very slowly move on touch like Clematis. CUL-DAR157.1.122. 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.
[122]
Feb. 6 1864
Bign. unguis main Peduncles of leaves very slowly move on touch like Clematis more strongly downwards than upwards.
This is certain but takes 1/2 a day.
In Bign. Speciosa which has a tendril peduncle does not have this power.
Sub-peduncle of leaflets do not move — single toe can move — Do not get straight again— /over
[122v]
Twines up straight free stick from right to left — so move f reverse of sun & in twining the peduncle of leaves curl round & claw catch one or opposite peduncle & so wonderfully fast. — could climb a bamboo tossed by wind — A piece of thread, in about 2 days caused peduncle to move
Tendrils drop off, when do not catch—
Does not regularly twine, but sometime takes a turn or half turn
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 20 July, 2023