Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 251-267

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Published in American Fern Journal, in 1985, in volume 75, pages 6-11

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Published in American Fern Journal, in 1982, in volume 72, pages 65-75

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Published in American Fern Journal, in 1982, in volume 72, pages 33-35

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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 Contributions from the University of Michigan Herbarium, in 1995, in volume 20, pages 241-260

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Published in American Fern Journal, in 1989, in volume 79, pages 46-54

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Published in American Fern Journal, in 2002, in volume 92, pages 239-240

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Published in American Fern Journal, in 1983, in volume 73, pages 53-62

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Published in Contributions from the University of Michigan Herbarium, in 1999, in volume 22, pages 135-187

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Published in The Wilson Bulletin, in 1945, in volume 57, issue 1, pages 86

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Published in Rhodora, in 1978, in volume 80, pages 92-106

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Published in Breviora, in 1995, in volume 500, pages 1-25

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Published in Biol Bull, in 1945, in volume 89, pages 122-130

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Published in Contributions From The University of Michigan Herbarium, in 1995, in volume 20, pages 239-240

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Published in Bulletin du Muséum National d'Histoire Naturelle Section B,Adansonia, botanique, phytochimie, in 1985, in volume 7, issue 3, pages 239-245

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Published in The Auk, in 1890, in volume 7, pages 404-407

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Published in The Auk, in 1910, in volume 27, pages 33-35

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Published in The Auk, in 1919, in volume 36, pages 163-169

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Published in Botanical Gazette, in 1911, in volume 51, issue 3, pages 229-230

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Published in The Flowering Plants of South Africa, in 1938, in volume 18, pages 1

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Published in Rhodora, in 1937, in volume 39, pages 425-8

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Published in Rhodora, in 1911, in volume 13, issue 155, pages 240

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Published in Entomological News, in 1990, in volume 101, pages 266-272

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Published in Entomologist's Record and Journal of Variation, in 1990, in volume 102, issue 9-10, pages 226

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Published in Biol Bull, in 1912, in volume 23, pages 154-170

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Published in The Auk, in 1905, in volume 22, pages 316-318

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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 Contributions from the University of Michigan Herbarium, in 1990, in volume 17, pages 313-325

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Published in The Auk, in 1911, in volume 28, pages 219-225

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Published in The Auk, in 1910, in volume 27, pages 418-427

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Published in Madroño, in 2005, in volume 52, pages 128-130

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Published in Biol Bull, in 1944, in volume 87, pages 227-241

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Published in The Auk, in 1898, in volume 15, pages 206-207

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Published in The Auk, in 1896, in volume 13, pages 38-43

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Published in The Wilson Bulletin, in 1916, in volume 28, issue 2, pages 51-58

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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 Madroño, in 1983, in volume 30, issue 2, pages 126

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Published in Zoologica, in 1939, in volume 24, issue 29, pages 477-480

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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 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 Bull. Zool. Nom., in 1969, in volume 25, pages 234

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Published in Novon, in 2002, in volume 12, pages 360-365

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