RECORD: Darwin, C. R. 1852.04. Dr Hooker/In India, the Maize is often hermaphrodite, CUL-DAR205.4.82. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 11.2021. 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-DAR205.4 contains notes on geographical distribution and species.

The crayon number '20' indicates that this document was filed by Darwin in his portfolio for the subject of Island endemism: plants.


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April 1852. Dr Hooker

In India, the maize is often hermaphrodite, that is three female flowers produced amongst the male.

20

On mountains of Borneo, distinctly Australian genera a wonderful case. All showing the driving of plants north & south, from recently Hotter climate of world.

Edwardsia a true common to Juan Fernandez Chile & N. Zealand. Hooker scorns its transportal & says a mouse might as well be transported. But Juan is one step (but gives no reason), if transported by sea-currents, cannot be connected land – on account of diversity of all animals maize & land – Even a chain of islands only a little lessens the difficulty of transportal. It is leguminous & therefore a lasting seed. Admit on transportal theory probably started from N. Zealand, as aboriginal – How air currents push west & then turn up to north.

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The diversity of production show that continent continuous. The number of mundane species show that power of transportal greater than is understood. Hooker says N. Zealand looks like Flora of continent, but he argues only from great distinctness of forms (as for instance compared with Galapagos) & odd proportional numbers as only 3 (?) Leguminosæ

 


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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 25 September, 2022