From:
Johann Xaver Robert (Robert) Caspary
To:
Charles Robert Darwin
Date:
[after 9 June 1866]
Source of text:
DAR 109: A81; DAR 111: B45, B48b, B48c
Summary:
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].
Contributor:
Darwin Correspondence Project