Published in Rhodora, in 1979, in volume 81, issue 825, pages 137-140

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Published in The Wilson Bulletin, in 1942, in volume 54, issue 4, pages 237

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Published in American Fern Journal, in 2003, in volume 93, pages 47

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Published in The Wilson Bulletin, in 1943, in volume 55, issue 1, pages 50

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Published in The Wilson Bulletin, in 1944, in volume 56, issue 3, pages 178-180

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Published in American Fern Journal, in 2003, in volume 93, pages 164-165

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Published in American Fern Journal, in 2011, in volume 101, pages 1-5

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Published in The Wilson Bulletin, in 1955, in volume 67, issue 2, pages 144-145

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Published in American Fern Journal, in 2002, in volume 92, pages 248

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Published in The Wilson Bulletin, in 1944, in volume 56, issue 4, pages 222-223

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Published in The Wilson Bulletin, in 1962, in volume 74, issue 2, pages 205-224

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Published in Palaeontology, in 1987, in volume 30, issue 4, pages 691-716

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Published in American Fern Journal, in 2001, in volume 91, pages 41-69

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Published in Rhodora, in 1997, in volume 99, issue 900, pages 380-381

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Published in Annals of the Missouri Botanical Garden, in 1992, in volume 79, pages 613-622

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Published in American Fern Journal, in 2007, in volume 97, pages 220-224

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Published in The Wilson Bulletin, in 1961, in volume 73, issue 4, pages 398-424

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Published in The Wilson Bulletin, in 1943, in volume 55, issue 4, pages 249-250

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Published in The Wilson Bulletin, in 1961, in volume 73, issue 3, pages 310-319

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Published in American Fern Journal, in 2009, in volume 99, pages 194-199

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Published in Annals of the Missouri Botanical Garden, in 2006, in volume 93, issue 3, pages 371-401

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Published in American Fern Journal, in 2005, in volume 95, pages 94-114

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Published in Annals of the Missouri Botanical Garden, in 1975, in volume 62, pages 538-589

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Published in The Wilson Bulletin, in 1970, in volume 82, issue 1, pages 14-28

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Published in Postilla, in 2001, in volume 225, pages 1-26

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Published in Rhodora, in 1980, in volume 82, pages 599-607

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Published in American Fern Journal, in 1989, in volume 79, pages 78-89

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Published in American Fern Journal, in 1997, in volume 87, pages 104-115

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Published in American Fern Journal, in 2003, in volume 93, pages 126-136

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Published in Annals of the Missouri Botanical Garden, in 1991, in volume 78, pages 105-130

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Published in The Wilson Bulletin, in 1991, in volume 103, issue 3, pages 401-414

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Published in American Fern Journal, in 2006, in volume 96, pages 100-102

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Published in Biol Bull, in 1971, in volume 140, pages 201-214

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Published in Phytologia, in volume 33, pages 203-227.

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Published in Bothalia, in 2002, in volume 32, issue 2, pages 233-249

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Published in Bothalia, in 2001, in volume 31, issue 1, pages 145-146

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Published in Madroño, in 1986, in volume 33, issue 1, pages 83

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Published in Rhodora, in 1978, in volume 80, issue 824, pages 575-580

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Published in Forktail, in 1998, in volume 13, pages 33-68

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Published in Veliger, in 1971, in volume 14, pages 172-176

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Published in Rhodora, in 1991, in volume 93, issue 873, pages 1-10

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Published in Bothalia, in 2007, in volume 37, issue 1, pages 103-108

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Published in Bothalia, in 2006, in volume 36, issue 2, pages 173-174

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Published in Cryptogamie. Mycologie, in 1988, in volume 9, issue 1, pages 75-83

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Published in Bothalia, in 2000, in volume 30, issue 1, pages 106-110

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Published in Great Basin Naturalist, in 1971, in volume 31, pages 106-108

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Published in The Coleopterists Bulletin, in 1976, in volume 30, issue 1, pages 81-83

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Published in Mycotaxon, in 1998, in volume 66, pages 445-491

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Published in Mycotaxon, in 1990, in volume 39, pages 27-30

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Published in J Washington Acad Sci, in 1964, in volume 54, pages 112-120

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