RECORD: Darwin, C. R. [1841.06]. Torn Apart Notebook: 93-94 (excised pages). CUL-DAR49.22. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Text prepared and edited by John van Wyhe 4.2021. RN2

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.


22

93

Maer June /41/

Rhododendrum — nectary marked by orange freckles on upper petal; bees & flies seen directed to it — The Humbles in crawling out brush over anther & pistil & one I saw impregnate by pollen with which bees a bee was dusted over.

[sketch]

Stamens & pistils have curve upwards, so that anthers & stigma lie in fairway to nectary. — Is not this so in Kidney Bean. How is it generally. —
In Azalea do it is so

Though I saw no Bees several visiting it. — In yellow day lily, the Bees visit base of upper petal, though not differently coloured — & stamens bend up a little

22v

94

In a wild purple Geranium, I see Bees visit always base of (a) upper petal from facility of alighting? which is not differently coloured & to which stamen & pistils have no relation. In Monk's Hood, a bee entering long nectary, would necessary cross directly over the bunch of anthers & pistils, but these do do not bend up — In Lark-spur, if Bees put proboscis within nectary they do they must disturb all anthers, wh otherwise lie protected by the hairy black lip of lower division of nectary: wh. itself resembles a Bee, but does not prevent bees visiting it. In Columbine nectaries are placed all round flower as they are in Crown-Imperial Lily & many other flowers —


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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 6 July, 2025