Published in Palaeontology, in 1987, in volume 30, issue 4, pages 691-716
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Published in American Fern Journal, in 2003, in volume 93, pages 47
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Published in Rhodora, in 1979, in volume 81, issue 825, pages 137-140
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Published in American Fern Journal, in 2003, in volume 93, pages 164-165
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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 2011, in volume 101, pages 1-5
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Published in American Fern Journal, in 2002, in volume 92, pages 248
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Published in American Fern Journal, in 2001, in volume 91, pages 41-69
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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 Annals of the Missouri Botanical Garden, in 1991, in volume 78, pages 105-130
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Published in American Fern Journal, in 2009, in volume 99, pages 194-199
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Published in American Fern Journal, in 2005, in volume 95, pages 94-114
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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 The Wilson Bulletin, in 1955, in volume 67, issue 2, pages 144-145
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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 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 The Wilson Bulletin, in 1961, in volume 73, issue 3, pages 310-319
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Published in Rhodora, in 1997, in volume 99, issue 900, pages 380-381
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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 1943, in volume 55, issue 4, pages 249-250
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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 1991, in volume 103, issue 3, pages 401-414
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Published in Torreya, in 1909, in volume 9, issue 7, pages 143-145
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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 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 Banisteria, in 2013, in volume 42, pages 9-56
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Published in Banisteria, in 2011, in volume 38, pages 86-87
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Published in Banisteria, in 2006, in volume 28, pages 3-23
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Published in Madroño, in 1964, in volume 17, issue 7, pages 227-230
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Published in Madroño, in 1978, in volume 25, issue 4, pages 231-232
Created: 2016-02-15, modified: 2016-07-07
Published in Torreya, in 1907, in volume 7, issue 3, pages 60-62
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Published in Journal of Hymenoptera Research, in 2010, in volume 19, issue 1, pages 189-198
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Published in The Australian Entomologist, in 2012, in volume 39, issue 4, pages 221-230
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Published in Biol Bull, in 1970, in volume 139, pages 239-247
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Published in Rhodora, in 1998, in volume 100, issue 902, pages 101-233
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Published in Molluscan Research, in 1997, in volume 18, issue 2, pages 289-298
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Published in American Fern Journal, in 1983, in volume 73, pages 93
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Published in Biol Bull, in 1953, in volume 104, pages 100-108
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Published in Proceedings of the Entomological Society of Washington, in 1972, in volume 74, issue 3, pages 288-302
Created: 2012-07-31, modified: 2012-07-31
Published in American Fern Journal, in 1982, in volume 72, pages 44
Created: 2017-04-23, modified: 2017-04-23
Published in American Fern Journal, in 1993, in volume 83, pages 135
Created: 2017-04-23, modified: 2017-04-23
Published in Biol Bull, in 1971, in volume 141, pages 319-330
Created: 2010-01-06, modified: 2011-06-21