Key to genera of ferns and fern allies
By: [by] Ray C. Friesner ..
Series: Butler University botanical studies -- no. 5
Publisher: Butler University
Published: 1929
Place of publication: [Indianapolis, Ind
Language: eng
Number of pages: 60
Subjects: Ferns
Notes: Cover-title

"Contributions no... 11 from the Botany Laboratories of Butler University."