Published in American Fern Journal, in 1968, in volume 58, pages 12-19

Published in American Fern Journal, in 1968, in volume 58, pages 19-29

Published in American Fern Journal, in 1968, in volume 58, pages 30-31

Published in American Fern Journal, in 1968, in volume 58, pages 31-32

Published in American Fern Journal, in 1968, in volume 58, pages 32-34

Published in American Fern Journal, in 1968, in volume 58, pages 34-37

Published in American Fern Journal, in 1968, in volume 58, pages 49-53

Published in American Fern Journal, in 1968, in volume 58, pages 54-64

Published in American Fern Journal, in 1968, in volume 58, pages 64-70

Published in American Fern Journal, in 1968, in volume 58, pages 70-73

Published in American Fern Journal, in 1968, in volume 58, pages 74-77

Published in American Fern Journal, in 1968, in volume 58, pages 77-88

Published in American Fern Journal, in 1968, in volume 58, pages 89-90

Published in American Fern Journal, in 1968, in volume 58, pages 90-91

Published in American Fern Journal, in 1968, in volume 58, pages 92

Published in American Fern Journal, in 1968, in volume 58, pages 93-94

Published in American Fern Journal, in 1968, in volume 58, pages 103-105

Published in American Fern Journal, in 1968, in volume 58, pages 105-107

Published in American Fern Journal, in 1968, in volume 58, pages 108-118

Published in American Fern Journal, in 1968, in volume 58, pages 119-125

Published in American Fern Journal, in 1968, in volume 58, pages 126-140

Published in American Fern Journal, in 1968, in volume 58, pages 142-143

Published in American Fern Journal, in 1968, in volume 58, pages 153-154

Published in American Fern Journal, in 1968, in volume 58, pages 155-158

Published in American Fern Journal, in 1968, in volume 58, pages 169-175

Published in American Fern Journal, in 1968, in volume 58, pages 176-178

Published in American Fern Journal, in 1968, in volume 58, pages 179-180

Published in American Fern Journal, in 1968, in volume 58, pages 180

Published in American Fern Journal, in 1968, in volume 58, pages 182-183