RECORD: Darwin, C. R. [1881].10.07. Drosera. CUL-DAR52.F84. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 10.2022. 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.

Drosera is the genus of plants known as sundews. These notes are for Darwin, C. R. 1875. Insectivorous plants. London: John Murray. (F1217) This is part of the notes at CUL-DAR52.F47-F68.


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Drosera

Oct 7th

Looked again at best slice in green young leaf (1) in Glycerine; all that I said true — endless spheres in epidermis & other cells — some still greenish— not one Ch. grain. It could be seen in some cases that large spheres due to union of small ones ― Some of the smallest spheres are not sphere but irregularly shaped. — Larger spheres solid for some are cracked — Whether Ch. grains always break up into small spheres seems doubtful — many swell & soften & blend together without this intermediate process. — I believe from cases in which gr. can be seen forming bars that they probably do aggregate without the intermediate condition— Some spheres with defined darker centre; this definition shows interval of time & so white zone round speres in tentacles.

In another green slice many good green spheres, with still many ch. grain & apparently naked particles of starch.


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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 2 November, 2022