Published in The Great Basin Naturalist, in 1946, in volume 7, pages 29
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Published in Asa Gray correspondence. Senders A, in 1837, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1837, pages 1-3
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Published in The Wilson Bulletin, in 1951, in volume 63, issue 1, pages 59-60
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Published in Asa Gray correspondence. Senders A, in 1864, pages 1
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Published in Asa Gray correspondence. Senders A, in 1866, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1873, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1876, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1877, pages 1-4
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Published in Asa Gray correspondence. Senders A, in 1873, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1875, pages 1-2
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Published in Novon, in 1998, in volume 8, pages 133-136
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Published in Botanical Gazette, in 1921, in volume 71, issue 1, pages 32-60
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Published in Biol Bull, in 1963, in volume 124, pages 163-169
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Published in The Auk, in 1912, in volume 29, pages 267
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Published in Asa Gray correspondence. Senders A, in 1888, pages 1-3
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Published in Asa Gray correspondence. Senders A, in 1889, pages 1
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Published in Journal of The Washington Academy of Sciences, in 1925, in volume 15, pages 136-137
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Published in Veliger, in 1973, in volume 16, pages 121-122
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Published in Rhodora, in 1940, in volume 42, issue 500, pages 280
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Published in Rhodora, in 1934, in volume 36, issue 430, pages 372-375
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Published in Sida, Contributions To Botany, in 2003, in volume 20, issue 3, pages 1335-1338
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Published in Madroño, in 1978, in volume 25, issue 2, pages 108-109
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Published in Madroño, in 1978, in volume 25, issue 4, pages 218-220
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Published in Nuytsia, in 1997, in volume 11, issue 3, pages 365-382
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Published in Rhodora, in 1932, in volume 34, issue 397, pages 1-4
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Published in The Auk, in 1914, in volume 31, pages 423
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Published in Botanical Gazette, in 1921, in volume 72, issue 3, pages 139-150
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Published in Palaeontology, in 1959, in volume 2, issue 1, pages 143-149
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Published in Nemouria, in 1970, in volume 1, pages 1-14
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Published in Madroño, in 2015, in volume 62, issue 3, pages 158-166
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Published in Bulletin of The African Bird Club, in 2010, in volume 17, issue 2, pages 225-228
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Published in American Fern Journal, in 1931, in volume 21, pages 11-20
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Published in American Fern Journal, in 1931, in volume 21, pages 64-71
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Published in Telopea, in 2019, in volume 22, pages 61-66
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Published in American Fern Journal, in 2003, in volume 93, pages 20-24
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Published in American Fern Journal, in 2008, in volume 98, pages 47-48
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Published in Phytologia, in 2018, in volume 100, issue 1, pages 27-36
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Published in Novon, in 1994, in volume 4, pages 324-329
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Published in Journal of The Washington Academy of Sciences, in 1950, in volume 40, pages 295-298
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Published in The Great Basin Naturalist, in 1990, in volume 50, issue 3, pages 295-298
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Published in Journal of Arachnology, in 1982, in volume 10, issue 3, pages 251-260
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Published in Rhodora, in 1994, in volume 96, issue 885, pages 97-101
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Published in BULL BROOKLYN ENT SOC, in 1961, in volume 56, issue 4, pages 100-102
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Published in Rhodora, in 1934, in volume 36, issue 429, pages 344-346
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Published in Phytologia, in 1980, in volume 45, pages 63-66
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Published in The Auk, in 1898, in volume 15, pages 284-285
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