RECORD: Darwin, C. R. 1881.07.26-08.08. Phyllanthus consanguineus. CUL-DAR67.80-81. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2023. 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-DAR67 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.
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1881.
Phyllanthus consanguineus
July 26th Drops put on at 9˚ a.m. — Plant in hot case quite free — leaflets not pinned
6 pairs of leaflets on 3d leaf from top & 4 pairs on 5th leaf from top well sponged with water at 96° (making 10 pairs) drops put on right-hand leaflet viewed from apex.
Leaflet after sponging only greasy. — Drops allowed often to dry.
Aug 2d. no effect. Drops temp. discontinued after morning of 3d until 5th (2 days intermission.)
Aug. 6th The leaves, those with drops of water & those without very much freckled with white marks (I know not cause) & the freckles are browner on the leaves with drops — no other difference)
Aug 6' Upper leaf Branch one leaflet with drops fell off on touch & when held to light many brown spaces see throughout leaf. — 7th another leaf dropped
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Aug 8th Plant frightfully unhealthy from red Spider. — I cannot see that leaves with drops at all more unhealthy than opposite sponged ones. —
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 14 June, 2023