The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1863.06.11. Euphorbia amygdaloides in young shoots has leaves. CUL-DAR45.148. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 10.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library William Huxley Darwin. The volume CUL-DAR45 contains notes for Natural selection chap. 4 'Variation under nature'.

[148]

June 11/63. Euphorbia amygdaloides in young shoots has leaves ⸮⸮⸮ on 3/8 (2 secondary stems) in older plants 5/13 — when flower stems branch off 8 in whorl.— Henslow says E. segetum is 5/13. Now I can no more believe this is special law than for marbles shaking together, standing in intervals on others so as to pack closest.

Nageli says in bud position fluctuates; by growth of intermediate tissue they come so to be equally separated & draw nutriment or provide nutriment for equal spaces, like trees in an orchard.—

[in margin:] Japan Lilies

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