CD is right on heterostyly in Primula. High praise. Has confirmed it with Primula polyanthus.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
CD is right on heterostyly in Primula. High praise. Has confirmed it with Primula polyanthus.
Sends sprig of Linum luteum corymbiflorum [?]. CD is right about its being dimorphic.
Will try some odd strawberry crosses this summer.
Convinced length of stamens has no relation to powers of fertilisation in many plants.
Suggests experiments on Pelargonium and Phlox.
Advises about use of microscope.