Wharton, Mary E. A guide to the wildflowers and ferns of Kentucky - Kentucky : The University Press, 1971 - 344 p. : ilus. - Kentucky Nature Studies ; 1 . - Kentucky Nature Studies ; 1 . LCCN: 53643 Subjects--Topical Terms: Flores silvestres--E.U.A. Dewey Class. No.: 582.13 / W43