From:
Charles Robert Darwin
To:
Asa Gray
Date:
1 July [1862]
Source of text:
Gray Herbarium of Harvard University (69)
Summary:
Thanks for notes on Cypripedium and Platanthera hookeri, which is really beautiful and quite a new case.
His son, George, has been observing the insect fertilisation of orchids.
CD has been crossing peloric flowers of Pelargonium, but doubts he will get good results with respect to sterility of hybrids.
Rhexia glandulosa does not appear to be dimorphic. Lythrum is trimorphic.
Contributor:
Darwin Correspondence Project