RECORD: Darwin, C. R. 1878.07.11-14. Little Bottle gourd / Draft of Cross and self fertilisation. CUL-DAR209.4.193. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 9.2022. 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-DAR209.4 contains materials for Darwin's book Movement in plants (1880).


[193]

Little Bottle gourd — stem tied

July 11 [sketch]

[data not transcribed]

(Used)

[193v]

96 707

Chap. E 10

originally diclinous, and which therefore profited by being always crossing ed with another individual, should have been converted into hermaphrodites, may perhaps be explained by the risk which they ran, especially as long as they were anemophilous, of not being always fertilised and consequently of not leaving offspring. This latter evil, the greatest of all to any organism, would have been much lessened by their being rendered becoming hermaphrodites, though with the contingent disadvantage of frequent self-fertilisation [text excised]

[Cross and self fertilisation, p. 410: "Why the descendants of plants which were originally dioecious, and which therefore profited by always intercrossing with another individual, should have been converted into hermaphrodites, may perhaps be explained by the risk which they ran, especially as long as they were anemophilous, of not being always fertilised, and consequently of not leaving offspring. This latter evil, the greatest of all to any organism, would have been much lessened by their becoming hermaphrodites, though with the contingent disadvantage of frequent self-fertilisation. By what graduated steps an hermaphrodite condition was acquired we do not know."]


Return to homepage

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

File last updated 27 September, 2022