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Darwin Correspondence Project

From Fritz Müller   19 October 1877

The transcript of this letter is not yet available online.

Summary

Doubts that glands of calyx of cleistogamic Malpighiaceae serve as protection.

Some species of Solanum bear long- and short-styled flowers on same plant.

Changing colours of some flowers may show insects the proper moment for fertilisation.

Doubts that the style of Pontederia cordata changes length.

Sexual difference in wings of some butterflies due to development in male of scales that emit odours to excite female.

Summary

Doubts that glands of calyx of cleistogamic Malpighiaceae serve as protection.

Some species of Solanum bear long- and short-styled flowers on same plant.

Changing colours of some flowers may show insects the proper moment for fertilisation.

Doubts that the style of Pontederia cordata changes length.

Sexual difference in wings of some butterflies due to development in male of scales that emit odours to excite female.

Letter details

Letter no.
DCP-LETT-11191
From
Müller, J. F. T.
To
Darwin, C. R.
Sent from
Santa Catharina, Brazil
Source of text
Möller 1915–21, 2: 363–4; Nature 17 (1877): 78–9

Please cite as

Darwin Correspondence Project, “Letter no. 11191,” accessed on 7 December 2016, http://www.darwinproject.ac.uk/DCP-LETT-11191

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