RECORD: Darwin, C. R. 1878.03.09-11. Cyperus alternifolius. CUL-DAR209.3.137. 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 volume CUL-DAR209.3 contains materials for Darwin's book Movement in plants (1880).
[137]
March 9th to 11th morning 1878
(A Papyrus looking Plant) = Cyperus alternifolius.
Movement of young stems (or petioles ) (for bear flowers); 10 inches high at close of observations with glass fixed transversely beneath crown of elongated leaves. Traced by F. on Horizontal glass, illuminated from above — It is scarcely possible to say how much magnified, for the stem grew so rapidly the mark had to be brought nearer several 2 or 3 times. It is clear from tracing that it circumnutates for it made circle during the day time of each 24°. —
35°. 15
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 14 December, 2022