RECORD: Darwin, C. R. & Francis Darwin. n.d. When there is no bloom on either side. CUL-DAR68.22. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2023. 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-DAR68 contains notes on 'bloom'. Francis Darwin explained: "His researches into the meaning of the 'bloom,' or waxy coating found on many leaves, was one of those inquiries which remained unfinished at the time of his death. He amassed a quantity of notes on the subject". LL3: 339. See an Introduction to these folders by Christine Chua & John van Wyhe.
[22]
O/O 160 sp
When there is no bloom on either side, about half of them species have all stomata below. Of the other half the greater number have most of the stomata below.
O/B 39 sp
When there is bloom only on the undersurface about 8/10 of the species have stomata only below
B/B 62 sp
When bloom on both sides, more than half the species have most more stomata above than below; only 0.3 of whole number of species have all the stomata below
B/O 10 sp
When bloom only below above the tendency to have more stomata above than below is still better marked
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 7 July, 2023