Published in Annals of the Missouri Botanical Garden, in 1954, in volume 41, pages 329-338

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Published in Biol Bull, in 1983, in volume 165, pages 110-118

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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 Annals of the Missouri Botanical Garden, in 1954, in volume 41, pages 395-418

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Published in Acta Botánica Mexicana, in 2006, in volume 74, pages 179-183

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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 1875, pages 1-2

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Published in Palaeontology, in 1998, in volume 41, issue 3, pages 387-421

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Published in Asa Gray correspondence. Senders A, in 1888, pages 1-3

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Published in Raptor Research, in 1982, in volume 16, issue 4, pages 132-134

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Published in Journal of The Adelaide Botanic Garden, in 1980, in volume 2, issue 2, pages 139-149

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Published in Contributions from the University of Michigan Herbarium, in 1975, in volume 11, issue 2, pages 41-50

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Published in The Wilson Bulletin, in 1994, in volume 106, issue 3, pages 537-548

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Published in Mémoires du Muséum National d'Histoire Naturelle. Série A, Zoologie, in 1982, in volume 123, issue 1, pages 129-133

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Published in Rhodora, in 1932, in volume 34, issue 397, pages 1-4

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Published in Journal of Raptor Research, in 2002, in volume 36, issue 1, pages 39-44

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Published in Records of The Indian Museum, in 1918, in volume 15, pages 105-107

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Published in The Great Basin Naturalist, in 1994, in volume 54, issue 2, pages 142-149

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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 Proceedings of The Linnean Society of New South Wales, in 1934, in volume 59, pages 270-272

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Published in American Fern Journal, in 1931, in volume 21, pages 11-20

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Published in Proc. Calif. Acad. Sci., in 1969, in volume 36, pages 279-315

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Published in The Coleopterists Bulletin, in 1979, in volume 33, issue 1, pages 61-67

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Published in Entomological News, in 1981, in volume 92, pages 69-74

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Published in Rhodora, in 1994, in volume 96, issue 885, pages 97-101

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Published in Phytologia, in 1980, in volume 45, pages 63-66

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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 Novon, in 1997, in volume 7, pages 9-12

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