Nectar secretion in Edwardsia. Could the stamen protect stigma?
Sends monstrous Primula with three pistils.
Had never heard of Robert Caspary, but what DO thinks is the placenta could be a whorl of pistils without stigmas.
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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.
Nectar secretion in Edwardsia. Could the stamen protect stigma?
Sends monstrous Primula with three pistils.
Had never heard of Robert Caspary, but what DO thinks is the placenta could be a whorl of pistils without stigmas.
Evidence of tropical floras continuous since Tertiary cannot fit CD’s position on intermittent cold periods.
Agrees with CD on reversion and latency.
Continues to support, in debates at the Société d’Anthropologie, the view that variability of animals and anatomical modifications are produced by environment. Wishes to use CD’s niata cattle example from Journal of researches [2d ed., pp. 145–6].