The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1878.08.19. Bloom on leaves. CUL-DAR67.54. 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.

"Barlaston Lea, Staffordshire. Home of Francis Wedgwood, near Upper House. 1852 CD and ED visited on journey to Rugby, Betley and Shrewsbury. 1866 Home of Clement Wedgwood on marriage. 1878 Jun. CD and ED visited." Paul van Helvert & John van Wyhe, Darwin: A Companion, 2021.

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Barlaston Aug 19th 1878— Bloom on Leaves

Japanese Willow (lower surface silvery)

Jessamine, lower surface more repellant than upper

Wisteria — Highly repellent

~~Pin~~ Vinca minor — both wetted

~~Syringa (larg sp.~~

Fig — somewhat repellent

Liliaceous Plant

Composite (tall)

Oenothera — somewhat repellent

Hypericum common (mid-rib silvery does not Sachs say no stomata or mid-rib)

Petunia violacea — both wetted

Verbena (purple) (both wetted)

Rhododendron — both repellent

Holly — broad-leaved — both surfaces repellent

Phyllosaea — lower surface more repellent

Epilobium weed)

Andromeda

Persian Lilac — lower surface rather repellent

Cistus (purple) both surface wetted

Calceolaria — both wetted

Mahonia — slightly silvery

Blue Lobelia — surfaces, especially lower one repellent

Pelargonium (2 sp.) — sp with divided leaves lower surface rather repellent.

Fuchsia — lower surface very repellent

Begonia (large-leaved, spotted) lower surface somewhat repellent, not silvery

Begonia small-leaves — both surface wetted.

Box

Gentian (Blue)

Pyrus Japonicus (lower surface slightly repellent)

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