Published in Occasional Papers of the Museum of Natural History University of Kansas, in 1996, in volume 179, pages 1-25

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Published in Proceedings of the Biological Society of Washington, in 1961, in volume 74, pages 105-110

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Published in Proceedings of the Biological Society of Washington, in 1981, in volume 93, pages 887-913

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Published in Proceedings of The Biological Society of Washington, in 1980, in volume 92, issue 1, pages 10-22

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Published in Proceedings of The Biological Society of Washington, in 1987, in volume 100, issue 1, pages 164-172

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Published in Proceedings of the Biological Society of Washington, in 1981, in volume 93, pages 997-1015

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Published in Annals of Tropical Medicine & Parasitology, in 1926, in volume 20, issue 2, pages 147-160

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Published in The Great Basin Naturalist, in 1986, in volume 46, issue 2, pages 358-360

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Published in Proceedings of The Biological Society of Washington, in 1967, in volume 80, pages 227-228

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Published in The Wilson Bulletin, in 1994, in volume 106, issue 3, pages 466-473

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Published in Proceedings of the Biological Society of Washington, in 1984, in volume 98, pages 799-808

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Published in The Wilson Bulletin, in 1941, in volume 53, issue 1, pages 33-36

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Published in Bulletin of The Museum of Comparative Zoology, in 1982, in volume 150, pages 31-93

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Published in Proceedings of The Biological Society of Washington, in 1987, in volume 100, pages 112-120

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Published in Michael Schuck Bebb letters to Asa Gray, 1859-2101, in 1892, pages 1-4

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Published in Palaeontology, in 1986, in volume 29, issue 3, pages 519-526

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Published in Sida, Contributions To Botany, in 2006, in volume 22, issue 1, pages 705-723

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Published in Palaeontology, in 1963, in volume 6, issue 1, pages 145-147

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Published in The Great Basin Naturalist, in 1983, in volume 43, pages 371-372

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Published in The Wilson Bulletin, in 1998, in volume 110, issue 4, pages 497-503

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Published in Palaeontology, in 1990, in volume 33, issue 2, pages 359-378

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Published in Annals of the Missouri Botanical Garden, in 1998, in volume 85, pages 34-47

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Published in Records of the Australian Museum, in 1905, in volume 6, pages 31-37

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

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Published in Proceedings of The Royal Society of Victoria, in 1922, in volume 34, issue 2, pages 196-206

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