Published in Biol Bull, in 1988, in volume 175, pages 417-429

Created: 2010-01-07, modified: 2011-06-21

Published in American Fern Journal, in 1915, in volume 5, pages 7-9

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Published in American Fern Journal, in 1919, in volume 9, pages 58-59

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Published in American Fern Journal, in 1919, in volume 9, pages 115-117

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Published in American Fern Journal, in 1925, in volume 15, pages 62-65

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Published in American Fern Journal, in 1925, in volume 15, pages 98-100

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Published in American Fern Journal, in 1925, in volume 15, pages 123-124

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Published in American Fern Journal, in 1928, in volume 18, pages 23-26

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Published in American Fern Journal, in 1928, in volume 18, pages 58-59

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Published in American Fern Journal, in 1931, in volume 21, pages 24-25

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Published in American Fern Journal, in 1931, in volume 21, pages 109-111

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Published in American Fern Journal, in 1931, in volume 21, pages 26-27

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Published in American Fern Journal, in 1931, in volume 21, pages 111

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Published in American Fern Journal, in 1915, in volume 5, pages 9-10

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Published in American Fern Journal, in 1925, in volume 15, pages 87-90

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Published in American Fern Journal, in 1919, in volume 9, pages 88-93

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Published in American Fern Journal, in 1922, in volume 12, pages 58-63

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Published in American Fern Journal, in 1925, in volume 15, pages 19-21

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Published in American Fern Journal, in 1925, in volume 15, pages 21-22

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

Published in American Fern Journal, in 1928, in volume 18, pages 94-95

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Published in American Fern Journal, in 1928, in volume 18, pages 124-128

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Published in American Fern Journal, in 1931, in volume 21, pages 74-75

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Published in American Fern Journal, in 1931, in volume 21, pages 139-140

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Published in American Fern Journal, in 1962, in volume 52, pages 132-133

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

Published in American Fern Journal, in 1970, in volume 60, pages 119-128

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

Published in American Fern Journal, in 1910, in volume 1, pages 22-23

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

Published in American Fern Journal, in 1911, in volume 1, pages 40-43

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Published in American Fern Journal, in 1911, in volume 1, pages 75-77

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Published in American Fern Journal, in 1911, in volume 1, pages 104

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Published in American Fern Journal, in 1913, in volume 3, pages 83-85

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Published in American Fern Journal, in 1915, in volume 5, pages 108-113

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Published in American Fern Journal, in 1919, in volume 9, pages 5-17

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Published in American Fern Journal, in 1931, in volume 21, pages 117-124

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Published in American Fern Journal, in 1910, in volume 1, pages 17-19

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Published in American Fern Journal, in 1911, in volume 1, pages 45-48

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Published in American Fern Journal, in 1911, in volume 1, pages 49-51

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

Published in American Fern Journal, in 1917, in volume 7, pages 87-90

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

Published in American Fern Journal, in 1919, in volume 9, pages 48-50

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

Published in American Fern Journal, in 1922, in volume 12, pages 16-19

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

Published in American Fern Journal, in 1922, in volume 12, pages 122-125

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

Published in American Fern Journal, in 1925, in volume 15, pages 1-7

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Published in American Fern Journal, in 1925, in volume 15, pages 69-80

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Published in American Fern Journal, in 1925, in volume 15, pages 107-117

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Published in American Fern Journal, in 1931, in volume 21, pages 106-109

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Published in American Fern Journal, in 1942, in volume 32, pages 127-138

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Published in American Fern Journal, in 1966, in volume 56, pages 101-107

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Published in American Fern Journal, in 2003, in volume 93, pages 95-96

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

Published in American Fern Journal, in 1915, in volume 5, pages 52-54

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

Published in American Fern Journal, in 1917, in volume 7, pages 67-73

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Published in American Fern Journal, in 1917, in volume 7, pages 114-121

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