Is printing a book on dimorphic plants [Forms of flowers] in which he will make considerable use of FM’s work.
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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.
Is printing a book on dimorphic plants [Forms of flowers] in which he will make considerable use of FM’s work.
Requests observations on sensitive Mimosa and movements of plants in rain.
Worm-castings.
Asks for Cassia seed for experiments.
Thanks CD for new [2d] edition of Orchids.
Mentions some observations on dimorphic plants.
Reports on a third species of Pontederia [see Forms of flowers, p. 185].
Describes some unusual grasses.
Reports rumours from southern Brazil concerning the existence of a gigantic subterranean animal.
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.
Sends proboscis of a Sphinx-moth that is 22 cms long.
Discusses eleven species of butterfly which visit Lantana, a plant which blooms only for three days and whose flowers are yellow on the first day, orange on the second, and purple on the third. Most species only visit the flowers when they are yellow.
Describes and draws the odiferous organs of a Sphinx-moth.
Describes a secondary sexual character of several species of Callidryas and other Pierinæ: the costal margin of the anterior wing is sharply serrated in the males, while it is smooth in the females.