Reference:Rydberg1898a
Verbatim text: Rydberg, P. A. 1898. A Monograph of the North American Potentilleae. New York. [Mem. Dept. Bot. Columbia Coll. 2.]
Author: Rydberg, P.A.
Year: 1898
Title: A Monograph of the North American Potentilleae
Journal: Mem. Dept. Bot. Columbia Coll.
Volume: 2