The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1879.05.28-06.23. Cannabis sativa / Wisteria sinensis. CUL-DAR209.7.18. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2022. 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 volumes CUL-DAR209.7-8 contain notes on heliotropism (phototropism) for Darwin's book Movement in plants (1880).

[18]

Cannabis sativa May 28th. /79/ 10° 30' Upper young leaves considerably declined — white thread). 8° a.m. 29th. now horizontal —

(29th 10° P.m.taller plant with thread — young leaves 38° beneath horizon— Shorter plant 36° beneath Horizon.)—

30th 2° P.m. on taller plant same leaves one leaf on one on one side 21° & on other sides 12° beneath horizon: on shorter plant both leaves at right angles to stem or horizontal.

(Elevation Leaves)

/Kept

[18v]

Cannabis sativa, I think copious watering caused the leaves to sink rather more at night; sees Kraus' Paper,

Jun 23d. 10° P.m. Plants now older some in flower & the leaves of these not depressed — the opening leaves on other plants with blade slightly bowed down.

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