The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1857.06.08. Crucianella stylosa. CUL-DAR49.46. 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.

[46]

June 8 Crucianella stylosa. The corolla is narrowish & anthers open in bud & are pressed round very rough & clubbed stigma which greatly elongates by quick growth & elasticity. The knobbed stigma brushes as much pollen, but not apparently all, but I think all is removed, before stigma opens.

(I suspect good case of Dichogamy, but doubtfully good for use of elongation of pistil.

I had better leave out this case so much pollen left is often protrusion of stigma

In Fraxinella, after bursting of 1/2 anthers & then turning up then pistil elongates & turns up. It is this second case of 1/2 Dichogamy.

(1857)

V. C. Sprengel I think Horsechesnut like Fraxinella - Yes stamen turn up but wither away turned up.

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