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Published in American Fern Journal, in 1985, in volume 75, pages 6-11
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Published in Annals of the Missouri Botanical Garden, in 1992, in volume 79, pages 718-729
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Published in Entomological News, in 1990, in volume 101, pages 266-272
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Published in Contributions From The University of Michigan Herbarium, in 1982, in volume 15, pages 315-324
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Published in The Auk, in 1911, in volume 28, pages 219-225
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Published in Contributions from the University of Michigan Herbarium, in 1990, in volume 17, pages 313-325
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Published in Biol Bull, in 1944, in volume 87, pages 227-241
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Published in Madroño, in 1986, in volume 33, issue 4, pages 307-308
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Published in Bonn zoological bulletin, in 2012, in volume 61, issue 2, pages 216-240
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Published in Contributions From The University of Michigan Herbarium, in 1993, in volume 19, pages 83-92
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Published in Zoologica, in 1939, in volume 24, issue 29, pages 477-480
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Published in Biol Bull, in 1952, in volume 103, pages 226-241
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Published in The Auk, in 1904, in volume 21, pages 349-363
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Published in The Auk, in 1896, in volume 13, pages 115-124
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Published in The Auk, in 1919, in volume 36, pages 434
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Published in Botanical Gazette, in 1898, in volume 25, issue 6, pages 418-426
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Published in Entomologische Zeitschrift, in 1909, in volume 23, pages 17-19
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Published in Archiv für Naturgeschichte, in 1836, in volume 2, issue 1, pages 369-372
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Published in Bull. Zool. Nom., in 1969, in volume 25, pages 234
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Published in Biol Bull, in 1910, in volume 20, pages 14-18
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Published in The Auk, in 1915, in volume 32, pages 115
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