RECORD: Darwin, C. R. n.d. [Abstract of Botany, Encyclopedia Britannica, 1817]. CUL-DAR49.159-160. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2021. 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.


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[159]

Encyclop[edia] Brit[annica] 1817 Art Bot

Sundews does not attribute much to insects quite secondary – give cases of Lamah plant placed beneath mole which secured impreg –

[in margin:] Brown has discussed this see my note abortion

Says when pistil longer than stamen, flower depends – adversaries deny this – Says stigma & pollen ready at same time, confesses to exceptions says in monoecious plants – male flowers generally uppermost, but in Ricinus the female flowers stand uniformly above male.

Several observers Camerarius Alston Tournefort Miller & Geoffry have time mercury-spinage hemp lupulus Bryony & mags, & have found all these females isolated have yet produced seeds.

The mercury was 700 yards 

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Linnaeus came to opposite conclusion [illeg] Hemp from Spellar…

Stigma in unimpregnated flower very long keep green,

All these facts I believe taken from Linnaeus Dissert[ation] on sexes of Plants 1759 translated by Smith

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[160]

any other individuals – (yet why not Bees & my [illeg] insect)

Hasselquist says Arabs take male flowers of Date in spadix & split it & place pieces between branches of female flower – If spadix bursts or come out, they are useless – requires maidenhead – How there are trees impreg in wild state.

Why keep some of the Spadixes in [chance] of next year being unfarmable

A female Turpentine tree planted by M. de Serre had male pistachio well covered with flowers planted very near it & produced a "great quantity of fruit"

Pollen of Marvel of Peru immense as large as stigma

Stye of Mirabilis longiflora shanked with pollen of the Jalappa "the seed-buds swelled, but did not ripen"


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

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