RECORD: Darwin, C. R. [ny].09.19-10.30. Clematis microphylla. CUL-DAR157.1.69. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2023. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here.
The volumes CUL-DAR157.1-2 contain notes, abstracts etc. for Darwin's long paper and later book Climbing plants (1865). It was also commercially available as a softbound offprint, F834, F834a. See R. B. Freeman's bibliographical introduction. Items CUL-DAR157.1.11-60 were in a folder marked "Twiners". Items CUL-DAR157.1.61-112 were in a folder marked "Leaf-climbers" and items CUL-DAR157.1.114-147 were in a folder marked "Tendrils". Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.
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Clem. microphylla. Sept. 19th
Young shoot made, 4 revolutions, either 3 narrow irregular long ellipses & one very large circle, in 1° 49, 1° 54, 1' 56 1° 47 — average 1°. 51' Is this not quickest mover —?? reversed its course, took very large & big sweeps; yet I doubt whether a Twiner though internodes so long & thin —
Sept 19' Two excellent leaves were observed from 9° 15' to 6°; ie for 8° 45' & made course drawn & each made in this time between 3 & 4 small & very irregular ellipse — One perfect ellipse was performed in 2°. 35.'
The movement of the two leaves independent of each other. — could not be young leaf bending down or growth— light →
[69v]
Probably leaves of C. viticella & C. flammula would move—
When stick is placed in way main basal peduncle, even near stem, very slowly clasps round it.—
Sept. 30' I now find leaves same shape & as C. viticella, except terminal part of petiole not quite at ∟to previous part; & laminæ of leaves even more curved inwards.
Sept 27th Some of the stems took a few turns round vertical stick, or now straight up, catching as with arm, but did reverse spire. —
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 July, 2023