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Published in The Wilson Bulletin, in 1965, in volume 77, issue 3, pages 302-305

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Published in Rhodora, in 1912, in volume 14, issue 166, pages 207

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Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 23-44

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Published in Asa Gray correspondence. Senders Li-Ly, 1839-1891 (inclusive), in 1863, pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1884, pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1884, pages 1-2

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Published in Rhodora, in 1981, in volume 83, issue 835, pages 474

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Published in Rhodora, in 1983, in volume 85, issue 843, pages 396

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Published in Biol Bull, in 1905, in volume 8, pages 169-188

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Published in Biol Bull, in 2002, in volume 202, pages 6-22

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Published in Annals of the Missouri Botanical Garden, in 1927, in volume 14, pages 1-46

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Published in Proceedings of the Entomological Society of Washington, in 1964, in volume 66, pages 101-102

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Published in Veliger, in 1991, in volume 34, issue 4, pages 317-323

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Published in Victorian Naturalist, in 2006, in volume 123, issue 4, pages 270-278

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Published in Biol Bull, in 1957, in volume 112, pages 371-376

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Published in Biol Bull, in 1969, in volume 136, pages 167-184

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Published in Bulletin du Museum national d'histoire naturelle, in 1946, in volume 18, issue 3, pages 287-293

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