RECORD: Darwin, C. R. n.d. Cassia bicapsularis / schinifolia / barclayana. CUL-DAR209.12.85. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2023. 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-DAR209.12 contains material for Darwin's book Movement in plants (1880).
[85]
Cassia bicapsularis (Kew) "Ind. Or. occ. Madera"
like greenhouse var.— when shaken leaves become inclined a little— sleep in normal fashion.—
27 [-] 8 [=] 19°
67 [-] 33 [=] 34°
Cassia Schinifolia = C. Barclayana. new. Holland no bloom on narrow the rigid leaves. At noon the many leaflets on opposite side of petiole lies in nearly a horizontal plane & middle ones formed angle together of 104°. [sketch]
At night they rise a little towards each other & towards apex of leaf, so that the angle of 104° was reduced to 72; therefore each leaflet now 16° towards the opposite one. The whole petiole rises: a rather oldish leaf stood 8° above horizon & at 10° P.m 27° above Horizon. A young leaf stood at 9° a.m 33° above horizon & at 10° P.m. 67°. The bush from the rising of the petioles & leaflets present a very different appearance at day & night— No rotation of Leaflets
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 2 September, 2023