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From Asa Gray   27 January 1863



Discusses the ill-will between England and U. S.

Considers the bases for deciding which plant species are "high" and which "low".

Comments on Alphonse de Candolle’s paper on oaks ["Étude sur l’espèce", Ann. Sci. Nat. (Bot.) 4th ser. 18 (1862): 59–110].

Encloses S. H. Scudder’s letter on Lepidoptera and fertilisation of orchids which identifies a butterfly with Platanthera pollinia adhering to it. Jokingly applies natural selection to butterflies acted on by orchid pollinia.

Author:  Asa Gray
Addressee:  Charles Robert Darwin
Date:  27 Jan 1863
Classmark:  DAR 165: 129, 130
Letter no:  DCP-LETT-3950