The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1863.05.03. A spring Phlox. CUL-DAR49.90. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR49 contains notes for Natural selection chap. 3 on 'On...organic beings occasionally crossing' or dichogamy.

[90]

May 3d. 1863 Hartfield - A spiny Phlox - tube of corolla very narrow - 5 anthers attached at different height all round tube by very short filaments; upper one at mouth; lower one 1/2 way down tube. Below lowest trifid stigma - Adapted for raking anthers –

[insertion:] Dichogam

allied to alternate lengths of stamens in many flowers - I do not say alternation cause for this object, but certainly subserves it in many cases.

Case of Sethia good showing alternation not indispensable -

Case of Lythrum good as showing cause of graduation

/over

[in margin:] another sp. of spiny phlox, with stigma intermediate in height.

[90v]

anthers dehisce towards centre so needle coated with coherent pollen.

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