RECORD: Darwin, C. R. 1864.12.09. [Climbing plants] When Nepenthes leaves had grown. CUL-DAR187.1. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 6.2022. 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.


[1]

Dec 9th 64/ When Nepenthes leaves had grown, [measured] [right portion damaged]

extreme points 16 inches in height, each young [plant] as it grew stood vertically up & afterwards [bent] down at right angles. The young leaf terminated in a filament, with the pitcher at its end so little developed that this part was clearly thicker than other parts. In the state the leaf certainly had slight sport movement from side to side, & when the filament came by its under or lateral surfaces laterally into contact with a stick, it very slowly bent round it, & so secured surely seized it.— As the leaf & stem continued to grow

[1v]

[left portion damaged] could not be of much service

as the leaf by its subsequent growth & by that of its [illeg] became quite slack. Hence it would appear [illeg] leaf which the plant is going, that the plant was chiefly the chief service for the [illeg] was to support the pitcher load with the secured fluid.

[Climbing plants, pp. 47-8: "Each young leaf when first formed stands upright, but soon becomes inclined; at this period of growth it terminates in a stalk or filament, with the pitcher at the extremity so little developed that this part is not thicker than any other part. The leaf in this state certainly exhibited slight spontaneous movements; and when the stalk came into contact with a stick, it very slowly bent round and firmly seized it. But the leaf by its subsequent growth became quite slack, though the terminal stalk remained coiled round the stick; hence it would appear that the chief use of the coiling, at least whilst the plant is young, is to support the pitcher with its load of secreted fluid."]


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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 25 September, 2022