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