Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 141-172

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Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 425-484

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Published in Botanical Gazette, in 1893, in volume 18, issue 11, pages 420-427

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Published in Journal of South African Botany, in 1972, in volume 38, issue 1

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Published in American Fern Journal, in 1978, in volume 68, pages 31-32

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Published in American Fern Journal, in 1999, in volume 89, pages 181-186

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Published in Novon, in 1992, in volume 2, pages 419-425

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Published in American Fern Journal, in 1911, in volume 1, pages 51-53

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Published in American Fern Journal, in 1995, in volume 85, pages 104-122

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Published in American Fern Journal, in 1925, in volume 15, pages 90-93

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Published in American Fern Journal, in 1974, in volume 64, pages 83-95

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Published in American Fern Journal, in 1987, in volume 77, pages 124-130

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Published in American Fern Journal, in 1980, in volume 70, pages 15-27

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Published in American Fern Journal, in 1982, in volume 72, pages 44

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Published in The Beagle, in 1989, in volume 6, issue 1, pages 229-240

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Published in American Fern Journal, in 1976, in volume 66, pages 116-120

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Published in American Fern Journal, in 1978, in volume 68, pages 62

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Published in American Fern Journal, in 1995, in volume 85, pages 63

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Published in American Fern Journal, in 1960, in volume 50, pages 109-113

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Published in American Fern Journal, in 1980, in volume 70, pages 98

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Published in American Fern Journal, in 1985, in volume 75, pages 76

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Published in Zoologischer Anzeiger Leipzig, in 1907, in volume 32, pages 449-454

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Published in American Fern Journal, in 1980, in volume 70, pages 31-32

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Published in American Fern Journal, in 1985, in volume 75, pages 72

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Published in American Fern Journal, in 1991, in volume 81, pages 76-88

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Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1917, in volume 126, pages 703-763

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Published in American Fern Journal, in 1983, in volume 73, pages 42

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Published in American Fern Journal, in 2006, in volume 96, pages 31-44

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Published in American Fern Journal, in 2011, in volume 101, pages 36-49

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Published in Annals of the Missouri Botanical Garden, in 1989, in volume 76, pages 330-349

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Published in American Fern Journal, in 1974, in volume 64, pages 117-118

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Published in American Fern Journal, in 1983, in volume 73, pages 94-95

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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 2007, in volume 97, pages 66-80

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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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