The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. [ny].04.07-.16 Smithia pfundii. CUL-DAR209.1.134. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 6.2022. 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-DAR209.1 contains materials on circumnutation of leaves and sleep for Darwin's book Movement in plants (1880).

[134]

Smithia pfundii. new aquatic plant— Africa

No bloom on cotyledons — not irritable.

Let. says go half to sleep at about 9°. P.m

Do not go in lest to sleep — thick & fleshy — intermediate condition with hypogean of colour of Copper-beech.—

Leaves go to sleep Lettington says splendidly

Ap. 7 9°. 15' leaflets rise during sleep but do not come into contact.— & point towards apex of leaf: Petioles certainly rise considerably during sleep.

Ap. 16 on plants 3-4 inches high the true pinnated leaves do not appear to be in the least sensitive. They are covered with good bloom.

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