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Published in Madroño, in 1929, in volume 1, issue 17, pages 274-275

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Published in The Auk, in 1908, in volume 25, pages 478-479

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Published in Annals of the Missouri Botanical Garden, in 1990, in volume 77, pages 851

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Published in The Auk, in 1901, in volume 18, pages 33-45

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Published in The Coleopterists Bulletin, in 1977, in volume 31, issue 4, pages 346

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Published in Biol Bull, in 1934, in volume 66, pages 316-325

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Published in The Auk, in 1907, in volume 24, pages 357

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Published in The Auk, in 1906, in volume 23, pages 437-453

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Published in American Fern Journal, in 1991, in volume 81, pages 75

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Published in American Fern Journal, in 1999, in volume 89, pages 179

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Published in Madroño, in 1986, in volume 33, issue 2, pages 149-151

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Published in Madroño, in 1973, in volume 22, issue 3, pages 156-157

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Published in American Fern Journal, in 1995, in volume 85, pages 95-96

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