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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1891, pages 1
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Published in Journal of Raptor Research, in 1997, in volume 31, issue 4, pages 384-385
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Published in Rhodora, in 1983, in volume 85, issue 841, pages 45-54
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Published in American Fern Journal, in 1982, in volume 72, pages 65-75
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Published in Rhodora, in 1913, in volume 15, issue 176, pages 144-151
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Published in Rhodora, in 1913, in volume 15, issue 175, pages 122-132
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Published in Botanical Gazette, in 1890, in volume 15, issue 8, pages 211
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Published in Rhodora, in 1942, in volume 44, issue 520, pages 93-97
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Published in Bonner Zoologische Beiträge, in 1964, in volume 15, pages 198-210
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Published in Botanical Gazette, in 1888, in volume 13, issue 10, pages 265-268
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Published in American Fern Journal, in 1970, in volume 60, pages 30-32
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Published in Botanical Gazette, in 1899, in volume 27, issue 6, pages 481-482
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Published in Transactions of The Royal Entomological Society of London, in 1894, in volume 42, pages 53-141
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Published in Botanical Gazette, in 1891, in volume 16, issue 8, pages 234-235
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Published in Moscosoa, in 1993, in volume 7, issue 0, pages 199-200
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Published in Journal of The Arnold Arboretum, in 1981, in volume 62, issue 2, pages 129-209
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Published in American Fern Journal, in 1982, in volume 72, pages 62
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Published in Rhodora, in 1958, in volume 60, issue 717, pages 237-243
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Published in Sida, Contributions To Botany, in 1964, in volume 1, issue 5, pages 274-293
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Published in Rhodora, in 1962, in volume 64, issue 759, pages 225-227
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Published in Rhodora, in 1912, in volume 14, issue 162, pages 107-113
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Published in Sida, Contributions To Botany, in 1983, in volume 10, issue 1, pages 33-36
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Published in Journal of The Arnold Arboretum, in 1986, in volume 67, issue 4, pages 441-469
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Published in Journal of The Arnold Arboretum, in 1979, in volume 60, issue 4, pages 477-503
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Published in Journal of The Arnold Arboretum, in 1982, in volume 63, issue 2, pages 103-144
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Published in The Wilson Journal of Ornithology, in 2006, in volume 118, issue 3, pages 424-426
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Published in Madroño, in 2008, in volume 55, pages 170-177
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Published in Sida, Contributions To Botany, in 1986, in volume 11, issue 3, pages 329-333
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Published in Sida, Contributions To Botany, in 1984, in volume 10, issue 3, pages 203-206
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Published in Sida, Contributions To Botany, in 1990, in volume 14, issue 2, pages 263-266
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Published in Novitates Zoologicae,, in 1904, in volume 11, issue 1, pages 310-322
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Published in Annals of the Missouri Botanical Garden, in 1966, in volume 53, pages 100-103
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Published in Sida, Contributions To Botany, in 1964, in volume 1, issue 6, pages 383-384
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Published in Sida, Contributions To Botany, in 1977, in volume 7, issue 2, pages 95-102
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Published in Rhodora, in 1961, in volume 63, issue 752, pages 216-223
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Published in Moscosoa, in 1986, in volume 4, pages 222-225
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Published in American Fern Journal, in 1980, in volume 70, pages 45-46
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Published in Biol Bull, in 1977, in volume 153, pages 346-354
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Published in Annals of the Missouri Botanical Garden, in 1965, in volume 52, pages 182-211
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Published in Sida, Contributions To Botany, in 1964, in volume 1, issue 6, pages 381-382
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Published in Rhodora, in 1918, in volume 20, issue 231, pages 55-59
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Published in Rhodora, in 1916, in volume 18, issue 211, pages 165-168
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Published in Rhodora, in 1916, in volume 18, issue 208, pages 86-90
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Published in Rhodora, in 1922, in volume 24, issue 288, pages 231-236
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Published in Rhodora, in 1924, in volume 26, issue 301, pages 13-19
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Published in Rhodora, in 1914, in volume 16, issue 186, pages 106-113
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Published in Rhodora, in 1923, in volume 25, issue 292, pages 60-67
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