Published in American Fern Journal, in 1919, in volume 9, pages 1-5
Published in American Fern Journal, in 1919, in volume 9, pages 5-17
Published in American Fern Journal, in 1919, in volume 9, pages 23-28
Published in American Fern Journal, in 1919, in volume 9, pages 33-38
Published in American Fern Journal, in 1919, in volume 9, pages 38-48
Published in American Fern Journal, in 1919, in volume 9, pages 48-50
Published in American Fern Journal, in 1919, in volume 9, pages 56-58
Published in American Fern Journal, in 1919, in volume 9, pages 58-59
Published in American Fern Journal, in 1919, in volume 9, pages 67-73
Published in American Fern Journal, in 1919, in volume 9, pages 73-80
Published in American Fern Journal, in 1919, in volume 9, pages 86-88
Published in American Fern Journal, in 1919, in volume 9, pages 88-93
Published in American Fern Journal, in 1919, in volume 9, pages 93-95
Published in American Fern Journal, in 1919, in volume 9, pages 99-103
Published in American Fern Journal, in 1919, in volume 9, pages 103-106
Published in American Fern Journal, in 1919, in volume 9, pages 107-109
Published in American Fern Journal, in 1919, in volume 9, pages 109-115
Published in American Fern Journal, in 1919, in volume 9, pages 115-117
Published in American Fern Journal, in 1919, in volume 9, pages 117-118
Published in American Fern Journal, in 1919, in volume 9, pages 119-120
Published in American Fern Journal, in 1919, in volume 9, pages 120-121
Published in American Fern Journal, in 1919, in volume 9, pages 121-122
Published in American Fern Journal, in 1919, in volume 9, pages 122-123