The Coenopterid Ferns in American Coal Balls

• 1 March 1941
• journal article
• Published by JSTOR in The American Midland Naturalist
• Vol. 25  (2) , 233
• https://doi.org/10.2307/2420773

Abstract

Keywords

• COENOPTERID FERNS
• FERNS IN AMERICAN
• AMERICAN COAL BALLS