Gives some observations on orchids and on some plants which seem to be dichogamous.
Showing 1–20 of 338 items
Gives some observations on orchids and on some plants which seem to be dichogamous.
Data on good and bad pollen-grain yields of different species. Sends sketches of two male Rhamnus catharticus flowers [see Forms of flowers, p. 294].
Assures CD of his belief in descent from his first reading of Origin.
Describes a case of dichogamy.
Discusses dimorphism of Oxalis; one form has 99% sterile anthers. Has found three kinds of fertile anthers.
Sends his observations on sterility of Eschscholzia,
on Oxalis,
and on recently found dimorphic plants.
Sends specimen of Hedyotis [see Forms of flowers, p. 133].
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