Published in Novon, in 2002, in volume 12, pages 481-485

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Published in American Fern Journal, in 1999, in volume 89, pages 267-268

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Published in American Fern Journal, in 2014, in volume 104, pages 238

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Published in Annals of the Missouri Botanical Garden, in 1990, in volume 77, pages 865

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Published in American Fern Journal, in 2003, in volume 93, pages 81-89

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Published in Annals of the Missouri Botanical Garden, in 1990, in volume 77, pages 212-214

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Published in American Fern Journal, in 1991, in volume 81, pages 63-67

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Published in American Fern Journal, in 1993, in volume 83, pages 93-96

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Published in Arnaldoa, in 2010, in volume 17, issue 1, pages 51-83

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Published in Sida, Contributions To Botany, in 2005, in volume 21, issue 4, pages 2321-2342

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Published in American Fern Journal, in 2013, in volume 103, pages 40-48

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Published in Arnaldoa, in 2007, in volume 14, issue 1, pages 123-130

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Published in Arnaldoa, in 2009, in volume 16, issue 2, pages 109-121

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Published in Madroño, in 1944, in volume 7, issue 5, pages 159-160

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Published in Rhodora, in 1932, in volume 34, issue 400, pages 67

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Published in Torreya, in 1934, in volume 34, issue 1, pages 15-16

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Published in Avicennia, in 2003, in volume 16, pages 55-70

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Published in Nautilus Philadelphia, in 1953, in volume 67, pages 46-47

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Published in Madroño, in 1929, in volume 1, issue 16, pages 241-242

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Published in Torreya, in 1937, in volume 37, issue 3, pages 55-57

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Published in Acta Botánica Mexicana, in 2010, in volume 90, pages 7-10

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Published in American Fern Journal, in 1976, in volume 66, pages 25

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Published in Victorian Naturalist, in 2011, in volume 128, issue 4, pages 151

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Published in The Auk, in 1897, in volume 14, pages 101-102

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Published in The Auk, in 1916, in volume 33, pages 329-330

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Published in The Wilson Bulletin, in 1903, in volume 15, issue 1, pages 32

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Published in Rhodora, in 1933, in volume 35, issue 414, pages 225-226

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Published in Rhodora, in 1960, in volume 62, issue 741, pages 258-262

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Published in Journal Lepid Soc, in 1972, in volume 26, pages 140-149

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Published in The Auk, in 1904, in volume 21, pages 297-299

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Published in Victorian Naturalist, in 2007, in volume 124, issue 2, pages 125-126

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Published in The Auk, in 1909, in volume 26, pages 81-82

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Published in The Auk, in 1919, in volume 36, pages 587-589

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Published in The Auk, in 1901, in volume 18, pages 272

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Published in Phytologia, in 1976, in volume 33, issue 7, pages 455-466

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Published in Madroño, in 1943, in volume 7, issue 1, pages 1-4

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Published in Madroño, in 1957, in volume 14, issue 4, pages 133-144

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Published in Torreya, in 1942, in volume 42, issue 1, pages 14-17

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Published in Acta Botánica Mexicana, in 1990, in volume 10, pages 23-30

Created: 2016-08-14, modified: 2017-04-27

Published in American Fern Journal, in 2006, in volume 96, pages 115-126

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Published in Acta Botánica Mexicana, in 1994, in volume 28, pages 63-69

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Published in Biol Bull, in 1901, in volume 2, pages 195-207

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Published in Adansonia, in 1964, in volume 4, issue 3, pages 427-455

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Published in The Auk, in 1908, in volume 25, pages 153-166

Created: 2013-03-08, modified: 2013-03-08

Published in The Auk, in 1907, in volume 24, pages 158-159

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Published in Transactions of The American Microscopical Society, in 1911, in volume 30, pages 191-193

Created: 2013-03-11, modified: 2013-03-11

Published in The Auk, in 1906, in volume 23, pages 153-161

Created: 2013-03-08, modified: 2013-03-08

Published in The Wilson Bulletin, in 1902, in volume 14, issue 1, pages 16-20

Created: 2016-11-27, modified: 2016-11-27

Published in Journal of The Arnold Arboretum, in 1943, in volume 24, issue 2, pages 165-189

Created: 2016-07-07, modified: 2016-07-07

Published in Journal of The Arnold Arboretum, in 1946, in volume 27, issue 3, pages 289-291

Created: 2016-07-07, modified: 2016-07-07