Published in PHYTOLOGIA, in 1934, in volume 1, issue 2, pages 83-88

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Published in The Wilson Bulletin, in 1972, in volume 84, issue 2, pages 179-186

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Published in The Flowering Plants of South Africa, in 1922, in volume 2, pages 1

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Published in Rhodora, in 1914, in volume 16, issue 182, pages 41-43

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Published in Rhodora, in 1976, in volume 78, issue 816, pages 776-782

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Published in Phytologia, in 1977, in volume 36, pages 251-261

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Published in The Wilson Bulletin, in 1999, in volume 111, issue 2, pages 294

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Published in Biol Bull, in 1959, in volume 117, pages 546-561

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Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 443-454

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Published in Bothalia, in 2008, in volume 38, issue 1, pages 70-71

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Published in Asa Gray correspondence. Senders B-Ba, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1890, pages 1-3

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Published in Asa Gray correspondence. Senders B-Ba, in 1890, pages 1-3

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Published in Asa Gray correspondence. Senders B-Ba, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1888, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1890, pages 1-3

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Published in Asa Gray correspondence. Senders B-Ba, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1888, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1891, pages 1

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Published in Journal of The New York Entomological Society, in 1931, in volume 39, issue 3, pages 295-298

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Published in Bothalia, in 1998, in volume 28, issue 1, pages 35-39

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Published in Transactions of The Linnean Society of London, in 1844, in volume 19, pages 261-263

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Published in The Auk, in 1918, in volume 35, pages 233-234

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Published in Botanical Gazette, in 1886, in volume 11, issue 1, pages 1-6

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Published in Bothalia, in 2011, in volume 41, issue 1, pages 196-199

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Published in Bothalia, in 2006, in volume 36, issue 1, pages 73-75

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Published in Bothalia, in 2006, in volume 36, issue 2, pages 174

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Published in Bothalia, in 2001, in volume 31, issue 1, pages 31

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Published in Proceedings of The Entomological Society of Washington, in 1983, in volume 85, pages 628-630

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Published in Psyche: A Journal of Entomology, in 1924, in volume 31, issue 6, pages 302-304

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Published in Sida, Contributions To Botany, in 2002, in volume 20, issue 2, pages 868-869

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Published in Great Basin Naturalist, in 1975, in volume 35, pages 109-112

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Published in Copeia, in 1915, in volume 19, pages 11-12

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Published in The Auk, in 1906, in volume 23, pages 99-100

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Published in Botanical Gazette, in 1887, in volume 12, issue 7, pages 150-152

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Published in Botanical Gazette, in 1896, in volume 22, issue 1, pages 55-56

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Published in Bulletin of The Museum of Comparative Zoology, in 1952, in volume 107, pages 353-387

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Published in Veliger, in 2000, in volume 43, pages 98-99

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Published in Botanical Gazette, in 1920, in volume 69, issue 5, pages 426-437

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Published in Madroño, in 1975, in volume 23, issue 1, pages 15-24

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Published in Bothalia, in 2011, in volume 41, issue 1, pages 201-204

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Published in Phytologia, in 1975, in volume 30, pages 210-216

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Published in Iberus, in 2007, in volume 25, pages 43-48

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Published in Bulletin of the Natural History Museum (Natural History). Historical Series., in 1987, in volume 14, issue 1, pages 1-143

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