Published in American Fern Journal, in 1952, in volume 42, pages 7-13
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1545790
Published in American Fern Journal, in 1952, in volume 42, pages 93-110
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1545540
Published in American Fern Journal, in 1952, in volume 42, pages 131-133
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1545440
Published in American Fern Journal, in 1952, in volume 42, issue 2, pages 41
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1545799