filmy fern in Illinois
By: Robert A. Evers.
Contributors: Illinois. Natural History Survey Division
Series: Biological notes -- no. 44
Publisher: State of Illinois, Dept. of Registration and Education, Natural History Survey Division
Published: 1961
Place of publication: Urbana, Ill
Language: eng
Number of pages: 15
Subjects: Hymenophyllaceae; Ferns -- Illinois
Notes: Cover title.

"April 1961."

Includes bibliographical references (p. 15).