A revision of the North American species of the section Boraphila Engler of the genus Saxifraga (Tourn) L.
By: by Arthur Monrad Johnson.
Publisher: s.n.
Published: 1919
Place of publication: [Minneapolis
Language: eng
Number of pages: 109
Subjects: Saxifraga.
Other titles: Studies in the biological sciences. No. 4
Notes: "Reprinted from Studies in the Biological Sciences, No. 4."

Thesis (Ph. D.)--University of Minnesota, 1919.

Porsild Collection.