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From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
[before 10 Dec 1866]
Source of text:
The British Library (Loan MS 10 no 10)
Summary:

Hildebrand’s paper on trimorphism in Oxalis ["Über den Trimorphismus in der Gattung Oxalis", Monatsber. K. Preuss. Akad. Wiss. Berlin (1866): 352–74].

Problems of explaining brightly coloured, attractive seeds.

Haeckel has visited Down.

FM’s climbing plants paper is printed [J. Proc. Linn. Soc. Lond. (Bot.) 9 (1867): 344–9].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
31 Dec 1866 and 1 Jan 1867
Source of text:
The British Library (Loan MS 10 no 11)
Summary:

Thanks for observations on dimorphic plants. Dimorphism prevalent in certain groups throughout the world.

Retarded fertilisation in certain orchids.

Contributor:
Darwin Correspondence Project