Published in Acta Botánica Mexicana, in 2002, in volume 59, pages 71-73

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Published in Acta Botanica Mexicana, in 2017, in volume 118, pages 7-39

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Published in Acta Botánica Mexicana, in 2011, in volume 96, pages 33-48

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Published in Acta Botánica Mexicana, in 2000, in volume 53, pages 17-25

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Published in Rhodora, in 1919, in volume 21, issue 241, pages 24

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Published in Iberus, in 1988, in volume 8, pages 59-74

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Published in Veliger, in 1990, in volume 33, pages 166-173

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Published in Mitteilungen der Botanischen Staatssammlung München, in 1961, in volume 4, pages 167-169

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Published in Entomologische Zeitung Stettin, in 1879, in volume 40, pages 106-109

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Published in Zoological Science, in 1994, in volume 11, pages 633-645

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Published in Acta Botánica Mexicana, in 2000, in volume 50, pages 1-3

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Published in Pacific Science, in 1959, in volume 13, issue 4, pages 335-341

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Published in Acta Botánica Mexicana, in 2005, in volume 72, pages 39-51

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Published in Novon, in 1999, in volume 9, pages 42-45

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Published in Moscosoa, in 1978, in volume 1, issue 3, pages 64-70

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Published in Acta Botánica Mexicana, in 1995, in volume 31, pages 73-84

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Published in The Wilson Bulletin, in 1994, in volume 106, issue 2, pages 357-365

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Published in Acta Botánica Mexicana, in 2010, in volume 93, pages 1-39

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Published in Annals of the Missouri Botanical Garden, in 1990, in volume 77, pages 110-117

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Published in American Fern Journal, in 1987, in volume 77, pages 1-15

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Published in Madroño, in 1974, in volume 22, issue 8, pages 381-390

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Published in Revista De La Academia Canaria De Ciencias, in 1993, in volume 5, issue 4, pages 167-181

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Published in Moscosoa, in 2000, in volume 11, pages 7-10

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Published in Acta Botánica Mexicana, in 1999, in volume 46, pages 1-17

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Published in American Fern Journal, in 2008, in volume 98, pages 46-47

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Published in Proceedings of The American Philosophical Society, in 1896, in volume 35, issue 152, pages 205-212

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