RECORD: Darwin, C. R. n.d. Real angle [diagram] / Perfect alternation. CUL-DAR51.A24v. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed and edited by John van Wyhe. 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 folder CUL-DAR51A contains notes on Phyllotaxy.

A24v

Part of spire of 2/5 unrolled —

[sketch]

6    5    4

3    2

   5    4

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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 7 January, 2026