The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1857.11. Hooker thinks that when plant equally common in 2 countries. CUL-DAR45.102. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 10.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library William Huxley Darwin. The volume CUL-DAR45 contains notes for Natural selection chap. 4 'Variation under nature'.

[102]

Nov. 1857.— Hooker thinks that when plant equally common in 2 countries are generally variable in same way, but when one is rarer in one country is confined to one station & takes one form.—

Says Ranunculus aquatilis in India — Cardamine hirsuta in India & T. del Fuego — Cratægus oxyacantha in Himalaya varies in same way as in England — is sure that many other cases cd be added — Hedera helix varies as much in India as in Europe, but nearly all var. somewhat different.— As I have concluded in some cases & generally more or less in all polymorphous & well

[102v]

marked vars, & as they seem to follow same laws in clinging to big genera is an argument as fact of same class —

Ch. 4.

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