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Published in Botanical Gazette, in 1888, in volume 13, issue 12, pages 305-311
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Published in American Fern Journal, in 1915, in volume 5, pages 1-4
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Published in Journal of The Arnold Arboretum, in 1946, in volume 27, issue 4, pages 438-441
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Published in American Fern Journal, in 1917, in volume 7, pages 106-109
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Published in The Wilson Bulletin, in 1994, in volume 106, issue 1, pages 55-61
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Published in Nuytsia, in 1994, in volume 9, issue 3, pages 387-398
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Published in Biol Bull, in 1984, in volume 166, pages 277-298
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Published in American Fern Journal, in 1915, in volume 5, pages 4-7
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Published in Palaeontology, in 1979, in volume 22, issue 3, pages 537-548
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Published in Biol Bull, in 1981, in volume 160, pages 228-239
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Published in Biol Bull, in 1962, in volume 123, pages 243-252
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Published in Moscosoa, in 1983, in volume 2, pages 54-60
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Published in Sida, Contributions To Botany, in 1996, in volume 17, issue 1, pages 243-249
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Published in American Fern Journal, in 1913, in volume 3, pages 109-116
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Published in American Fern Journal, in 1915, in volume 5, pages 50-52
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Published in American Fern Journal, in 1946, in volume 36, issue 3, pages 91
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Published in Entomologist's Record and Journal of Variation, in 1966, in volume 78, pages 115-121
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Published in Muelleria, in 1967, in volume 1, issue 3, pages 175-196
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Published in Rhodora, in 1949, in volume 51, issue 607, pages 129-146
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