RECORD: Darwin, C. R. 1877.09.10-11. Lupinus hartwegii / Proof sheet of Forms of flowers. CUL-DAR209.1.77-78. 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).
[77]
Sept 10' & 11' 1877
Lupinus Hartwegii — (Hairy species)
[diagram] 103°
Two leaves on same plants
Shorter leaf: leaflets awake somewhat upturned forming a cone of angle of 103° when asleep the cone was 75°
Taller leaf: cone when awake 105°, when asleep 82°.
So it is clear that the leaflets rise, but do not become vertical during sleep.—
The petioles of These 2 leaflets rose considerably when, as shown in diagram & angle cd. be roughly measured.
78 [÷] 2 [=] 39
90 [-] 39 [=] 51
90 [-] 54 [=] 36
Leaflet stood in day 36° above horizon, & at night 51° [-] 36 [=] 15 above horizon.
[78]
L. Hartwegii Sept 10
[annotated diagram] Shorter leaf
[annotated diagram] distance from bottom of cone to cone
base of taller petiole
L. sub-carnosus — shorter leave forming horizontal stars — taller spes with leaflets deflexed. (first leaf with 3 leaflets)
[78v]
[Proof sheet of Forms of flowers, p. 14 (published pp. 26-28.]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 15 October, 2023