Published in Gulf and Caribbean Research, in 2007, in volume 19, issue 2, pages 141-148

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Published in Botanical Gazette, in 1906, in volume 42, issue 4, pages 312

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Published in Rhodora, in 1904, in volume 6, issue 68, pages 180

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Published in Nautilis, in 1922, in volume 36, pages 10-11

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Published in Nautilis, in 1890, in volume 4, pages 4-6

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Published in Nautilis, in 1890, in volume 3, pages 137-139

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Published in Nautilis, in 1890, in volume 3, pages 114-115

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Published in Rhodora, in 1934, in volume 36, issue 430, pages 375-376

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Published in Nautilis, in 1890, in volume 3, pages 103-105

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Published in The Auk, in 1898, in volume 15, pages 22-27

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Published in The Auk, in 1895, in volume 12, pages 219-225

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Published in Rhodora, in 1927, in volume 29, issue 345, pages 173-191

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Published in Rhodora, in 1969, in volume 71, issue 787, pages 478-479

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Published in Rhodora, in 1927, in volume 29, issue 346, pages 204-221

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Published in Transactions of the Academy of Science St. Louis, in 1903, in volume 13, pages 77-86

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Published in Transactions of the Academy of Sciences of St. Louis, in 1873, in volume 3, pages 65-166

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Published in Transactions of the Academy of Science of St. Louis, in 1897, in volume 7, pages 499-503

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Published in Rhodora, in 1927, in volume 29, issue 343, pages 117-133

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Published in Transactions of the St. Louis Academy of Science, in 1869, in volume 4, pages 296-315

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Published in Transactions of the Royal Entomological Society of London, in 1929, in volume 77, issue 2, pages 265-277

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Published in Annals of the Missouri Botanical Garden, in 1979, in volume 66, pages 1-108

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Published in The Auk, in 1885, in volume 2, pages 381-382

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Published in The Wilson Bulletin, in 1991, in volume 103, issue 1, pages 1-12

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Published in Transactions of the Academy of Science of St. Louis, in 1906, in volume 16, pages 125-434

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Published in The Great Basin Naturalist, in 1986, in volume 46, issue 4, pages 745-748

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Published in Annals of the Missouri Botanical Garden, in 1967, in volume 54, pages 147-152

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Published in Transactions of the Academy of Science of St. Louis, in 1904, in volume 14, pages 123-170

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Published in Annals of the Missouri Botanical Garden, in 1983, in volume 70, pages 170-178

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Published in Transactions of the Academy of Science of St. Louis, in 1933, in volume 28, pages 1-104

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Published in The Wilson Bulletin, in 1987, in volume 99, issue 4, pages 628-641

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Published in The Great Basin Naturalist, in 1991, in volume 51, issue 3, pages 261-266

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Published in Rhodora, in 1927, in volume 29, issue 344, pages 144-158

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Published in The Auk, in 1901, in volume 18, pages 382-387

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Published in Nautilis, in 1930, in volume 43, pages 101-103

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Published in Transactions of the Academy of Science of St. Louis, in 1894, in volume 5, pages 533-542

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Published in Asa Gray correspondence. Senders A, pages 1-2

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Published in Asa Gray correspondence. Senders A, pages 1-2

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Published in Journal of the Entomological Society of Ontario, in 2013, in volume 144, pages 119-123

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Published in Occasional Papers Museum of Texas Tech University, in 2009, in volume 286, pages 1-22

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Published in Pacific Science, in 1958, in volume 12, issue 2, pages 182

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Published in Phytologia, in 1990, in volume 69, pages 175-176

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Published in Asa Gray correspondence. Senders Be-Bo, pages 1-2

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Published in The Auk, in 1917, in volume 34, pages 171-181

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Published in Rhodora, in 1938, in volume 40, issue 471, pages 136

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Published in Asa Gray correspondence. Senders He-Hi, 1846-1891 (inclusive), pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1891, pages 1

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Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1881, pages 1-3

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Published in Transactions of the American Philosophical Society, in 1843, in volume 8, pages 53-59

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Published in Rhodora, in 1923, in volume 25, issue 295, pages 101-105

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Published in Novitates Zoologicae, in 1926, in volume 33, issue 1, pages 1-32

Created: 2011-10-05, modified: 2015-07-27