Published in American Fern Journal, in 1970, in volume 60, pages 107-118

Created: 2017-04-23, modified: 2017-04-23

Published in Halteres, in 2013, in volume 4, pages 79-86

Created: 2015-03-15, modified: 2015-03-15

Published in Fieldiana Life and Earth Sciences, in 2011, in volume 4, pages 103-111

Created: 2020-05-17, modified: 2020-05-17