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Published in American Fern Journal, in 1964, in volume 54, pages 113-126

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Published in Madroño, in 1993, in volume 40, issue 3, pages 186-187

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Published in Madroño, in 1986, in volume 33, issue 1, pages 81

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Published in Madroño, in 1960, in volume 15, issue 6, pages 172-177

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Published in Annals of the Missouri Botanical Garden, in 1983, in volume 70, pages 591-596

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Published in Madroño, in 1995, in volume 42, issue 4, pages 458-469

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Published in Madroño, in 1969, in volume 20, issue 3, pages 129-154

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Published in Journal of The Bombay Natural History Society, in 1961, in volume 58, pages 249-250

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Published in Torreya, in 1936, in volume 36, issue 2, pages 47-48

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Published in Bulletin of The Museum of Comparative Zoology, in 1957, in volume 116, pages 491-537

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Published in Journal of The Lepidopterists' Society, in 1987, in volume 41, pages 170-172

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Published in Torreya, in 1930, in volume 30, issue 1, pages 23-24

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Published in Western Australian Naturalist, in 1969, in volume 11, issue 4, pages 99

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Published in Memoirs of The Torrey Botanical Club, in 1918, in volume 17, issue 2, pages 97-175

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Published in Madroño, in 1990, in volume 37, issue 1, pages 60-65

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Published in Annals of The South African Museum, in 1997, in volume 105, pages 207-226

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Published in The Great Basin Naturalist, in 1993, in volume 53, issue 2, pages 162-167

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Published in Ticks, a monograph of the Ixodoidea, in 1960, in volume 5, pages 1-251

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Published in Madroño, in 2001, in volume 48, issue 3, pages 211-214

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Published in Madroño, in 2007, in volume 54, issue 2, pages 199-201

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Published in Asa Gray correspondence. Senders A, in 1890, pages 1

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Published in Asa Gray correspondence. Senders A, in 1888, pages 1

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Published in Asa Gray correspondence. Senders A, in 1890, pages 1

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Published in Asa Gray correspondence. Senders A, in 1893, pages 1

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Published in Rhodora, in 1961, in volume 63, issue 745, pages 29-30

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Published in Rhodora, in 1957, in volume 59, issue 700, pages 100

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Published in Torreya, in 1922, in volume 22, issue 2, pages 30-31

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Published in Torreya, in 1912, in volume 12, issue 2, pages 33-34

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Published in Torreya, in 1905, in volume 5, issue 9, pages 157-160

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Published in Bulletin of the Natural History Museum. Geology series., in 1996, in volume 52, pages 109-114

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Published in The Great Basin Naturalist, in 1998, in volume 58, issue 4, pages 352-362

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Published in Journal of Research on the Lepidoptera, in 1973, in volume 12, issue 2, pages 65-126

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Published in The Wilson Bulletin, in 2005, in volume 117, issue 1, pages 35-43

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Published in Rhodora, in 1943, in volume 45, issue 534, pages 217-220

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Published in Rhodora, in 1946, in volume 48, issue 573, pages 263-264

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Published in Rhodora, in 2003, in volume 105, issue 924, pages 407-409

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