New selaginellas from the western United States
Subtitle: (with six plates)
By: by William R. Maxon.
Series: Smithsonian miscellaneous collections -- v. 72, no. 5; Publication -- 2589; Publication (Smithsonian Institution) -- 2589.
Publisher: Smithsonian Institution
Published: 1920
Place of publication: City of Washington
Language: eng
Number of pages: 10
Subjects: Selaginella.