RECORD: Darwin, C. R. n.d. D longifolia. CUL-DAR60.1.128. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. 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-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).


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D longifolia

I made a very few observations on the another species, viz the Drosera longifolia: the leaves of this plant catch flies in nearly the same manner; the only difference which I observed was, that after the t. marginal hairs have curl become inflected over a fly, the end of the long elongated leaf curls in far towards the footstalk much more than in D. rotundifolia, but not the sides two lateral edges sides of the narrow leaf.

A fly well inflected leaf reexpanded in two days & eighteen hours after a dead a fly had been placed on it.—)

When we consider the vast number of insects caught & killed by the sun-dew, — when we consider that each leaf can successively catch several flies insects, — that one placed


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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 14 February, 2023