RECORD: Darwin, C. R. & Francis Darwin. [1878].11.09. Oxalis rosea and valdiviana. CUL-DAR209.6.135. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. 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-DAR209.6 contains materials for Darwin's book Movement in plants (1880).
Notes for Movement in plants. Text F1325
[135]
Nov 9 Pulvinus Oxalis rosea & valdiviana
There is no clear difference between the joints of the two species as far as any difference between upper & lower halves is concerned.
When looked at as birds eye view, the upper surface of rosea & lower of valdiviana are wrinkled. Cotyledons 3 1/2 mm long both about horizontal gathered between 10 & 11 am. In both when the leaf is placed on a bit of glass with upper surface down the stalk sticks up stiffly. In rosea there are rather more cells in the lower half of the joint, but this is also the case in one spec of valdiviana.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 21 January, 2023