The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. & Francis Darwin. 1874.10.20. Dionaea. CUL-DAR59.1.28. 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. The volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).

Dionaea muscipula is the Venus flytrap. These notes are for Darwin, C. R. 1875. Insectivorous plants. London: John Murray. (F1217)

[28]

Dionæa. Oct 20th 1874

Young leaf cut in half longitudinally; one half suspended over raw meat infusion which gave off frightfully strong putrid vapour; the other half over water.

Examined then after 26hrs suspension. There was aggregation in the octofids in both specimens & to about the same extent. No movement in the protoplasm; one specimen ~~watched~~ examined ~~for~~ after 1hr 3/4

Octofids

There are octofids on the footstalk, & apparently most on the upper surface—

There are a few octofids on the internal surface among the secreting glands

A fe good many octofids on the outer surface of leaf

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