RECORD: Darwin, Francis. n.d. Abstract of Sachs, Flora. CUL-DAR209.14.172. 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-DAR209.14 contains material for Darwin's book Movement in plants (1880).
[172]
Sachs Flora 1863
Die Vorubergehenden Starreszustande
466 Complete dark not necessary for dark paralysis
467. Periodic movements continue in dark ∴ "the change of light & dark is not the cause of periodic movements, but although it is the regulator" sudden changes of light or dark are irritant—
Temperatures
484. Compares the continuous periodic automatic movements of Mimosa with those of Hedysarum. "The internal impulse to oscillation is always present but in mimosa the Lichtreiz is too strong to allow the periodic these internal occurrences to appear while in Hedysarum the internal force is weak the light stimulation weak.
500. Leaves of papaver somniferum; Brassica nassus & Rose become concave underneath in the dark
Kabsch. Hedysarum B2. 1861
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 18 August, 2023