Systematics of Polystichum in western North America, north of Mexico
By: by David H. Wagner.
Series: Pteridologia ;; no. 1; Pteridologia ;; 1.
Publisher: American Fern Society
Published: 1979
Place of publication: [Washington]
Language: eng
Number of pages: 64
Subjects: Polystichum.; Ferns -- West (U.S.) -- Classification.; Ferns -- British Columbia -- Classification.
Genres: Classification.
Notes: Bibliography: p. 58-60.