Published in Zeitschrift für Säugetierkunde, in 1980, in volume 46, pages 93-108

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Published in Fieldiana Zoology, in 1998, in volume 90, pages 201-221

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Published in Fieldiana Zoology, in 1998, in volume 90, pages 163-200

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Published in Proceedings of the Biological Society of Washington, in 1991, in volume 104, issue 3, pages 419-435

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Published in Proceedings of The Biological Society of Washington, in 1997, in volume 110, issue 4, pages 640-680

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Published in Bonner zoologische Beiträge, in 1995, in volume 46, issue 1-4, pages 143-190

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Published in Rhodora, in 1925, in volume 27, issue 321, pages 172

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Published in Botanical Gazette, in 1894, in volume 19, issue 2, pages 81

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Published in Madroño, in 1934, in volume 2, issue 15, pages 122-123

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Published in Proceedings of The Biological Society of Washington, in 1999, in volume 112, pages 813-856

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Published in Madroño, in 1940, in volume 5, issue 7, pages 231-232

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Published in Madroño, in 1942, in volume 6, issue 7, pages 227-239

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Published in Madroño, in 1949, in volume 10, issue 3, pages 81-87

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Published in Proceedings of The Biological Society of Washington, in 2002, in volume 115, issue 3, pages 488-533

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Published in Botanical Gazette, in 1900, in volume 30, issue 5, pages 351

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Published in Botanical Gazette, in 1898, in volume 25, issue 1, pages 39-46

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Published in Madroño, in 1996, in volume 43, issue 2, pages 334-338

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Published in Botanical Gazette, in 1905, in volume 40, issue 5, pages 376-380

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Published in Botanical Gazette, in 1915, in volume 60, issue 1, pages 45-54

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Published in Botanical Gazette, in 1921, in volume 71, issue 6, pages 426-437

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Published in Botanical Gazette, in 1901, in volume 31, issue 2, pages 127-128

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Published in Botanical Gazette, in 1915, in volume 60, issue 5, pages 391-399

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Published in Annals of the Missouri Botanical Garden, in 1998, in volume 85, pages 34-47

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Published in Proceedings of the Biological Society of Washington, in 1985, in volume 98, pages 956-1003

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Published in Rhodora, in 1950, in volume 52, issue 613, pages 8-18

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Published in Rhodora, in 1924, in volume 26, issue 307, pages 135-144

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Published in Botanical Gazette, in 1921, in volume 72, issue 4, pages 220-236

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Published in The Wilson Bulletin, in 1905, in volume 17, issue 3, pages 97-99

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Published in Journal of the Arnold Arboretum, in 1943, in volume 24, pages 103-106

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Published in Proceedings of The Biological Society of Washington, in 1995, in volume 108, pages 338-369

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Published in Rhodora, in 1947, in volume 49, issue 578, pages 37-49

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Published in Journal of The Arnold Arboretum, in 1946, in volume 27, issue 4, pages 371-385

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Published in American Fern Journal, in 1983, in volume 73, pages 85-93

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Published in Palaeontology, in 1993, in volume 36, issue 1, pages 91-109

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Published in Brimleyana, in 1994, in volume 21, pages 77-85

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Published in American Fern Journal, in 1987, in volume 77, pages 37-41

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Published in The Wilson Bulletin, in 1999, in volume 111, issue 1, pages 56-60

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Published in Zoologica, in 1969, in volume 54, issue 5, pages 79-83

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Published in Botanical Gazette, in 1893, in volume 18, issue 12, pages 447-457

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Published in Madroño, in 2007, in volume 54, issue 3, pages 215-224

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Published in American Fern Journal, in 2003, in volume 93, pages 93-94

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Published in American Fern Journal, in 2005, in volume 95, pages 57-67

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Published in Madroño, in 1992, in volume 39, issue 1, pages 79-81

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Published in Muelleria, in 1995, in volume 8, issue 3, pages 307-310

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Published in Muelleria, in 1994, in volume 8, issue 2, pages 151-154

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Published in Journal of The Washington Academy of Sciences, in 1967, in volume 57, pages 61-69

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Published in Pan-Pacific Entomologist, in 2001, in volume 77, issue 1, pages 39-44

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Published in Bonner Zoologische Beiträge, in 2003, in volume 51, issue 2/3, pages 97-104

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Published in Palaeontology, in 1985, in volume 28, issue 1, pages 159-188

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Published in Journal of the Linnean Society of London, zoology, in 1908, in volume 30, pages 134-149

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