RECORD: Darwin, C. R. 1878.07.02-04. Pontederia fig 178 / Draft of Cross and self fertilisation. CUL-DAR209.3.287-288. 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).
Draft is in the hand of Ebenezer Norman with corrections by Darwin. The text of the draft corresponds to Cross and self fertilisation, p. 402.
[287]
Pontederia
(same scale no lettering) F 148
[288]
Pontederia St. Catherina uplands of July 1878 circumnutation of leaf
[288v]
although many plants [text excised]
frequented exclusively by pollen-devouring insects, yet the great majority of these flowers secrete nectar as the chief attraction. Many years ago I suggested that the saccharine matter in nectar was primarily an excretion of a waste product resulting from chemical changes in the sap; and that when the excretion happened to occur within the envelopes of a flower, it was utilised for the important object of
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 24 January, 2023