RECORD: Darwin, C. R. & Henrietta Darwin. 1864.03.20-04.12. Eccremocarpus Scaba. CUL-DAR157.2.2. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2023. 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-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-DAR157.11-60 were in a folder marked "Twiners". Items CUL-DAR157.61-112 were in a folder marked "Leaf-climbers" and items CUL-DAR157.114-147 were in a folder marked "Tendrils". Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.


[2]

Eccremocarpus Scaba [Scaber] March 20th 1864

Tendril gives out two lateral branches & bifurcates at end two terminal branches — each branch bifurcates twice & ends in a blunt double hook wh. is in fact another bifurcation— all the branches & branchlets are sensitive- terminal portion rubbed gently two or three times on the lower side slightly curved downwards in 9'.— in between 3° & 4° became parallel to base— in between 8° & 9° had become nearly straight again but never recovered quite its former position.

The t. rubbed laterally did not move so quick- viz in 20'. the t. when it catches nothing curls up irregularly & spirally— hence organisation of t. highly complex, but the t. is rather short, about equal to the leaf wh. carries it— but what is odd the t. has

[2b]

no spontaneous movement nor have the shoots.

These are stiff, & as the plant grows it is simply secured. Peduncles of leaves not sensitive- where tips of t. bends from touch basal parts bends. We see high perfection & imperfection going together.

April 12th — In Hothouse I find that neither shoot nor tendril have any spontaneous movement

[2bv]

With respect to action of t. in some respect analogous to capreolata — but does not as a whole seek darkness & tips do not form balls — Yet when given a moderate sized stick it or piece of bark, it continually lifted up its branches, & thus not infrequently hook to stick or bark. — the object of this was to turn hook to surface— & to spread out like a fluid — but alternately by spiral contraction drawn off— on bark adhered — wh When thin stick or twig given it, caught because t. came over & caught object— Did not care for loose tow, (so differs fr Capreol) but fixed would act. — But by far best action is in Asparagus — grass — bristles; for extreme tips of branches have strongest tendency to curl abruptly round some vin very thin objects—

Describe, really pretty a faggot made


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 21 July, 2023