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Published in Botanical Gazette, in 1886, in volume 11, issue 3, pages 49-53

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Published in Biol Bull, in 1973, in volume 145, pages 323-339

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Published in Journal of South African botany, in 1968, in volume 34, pages 5-7

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Published in The Wilson Bulletin, in 1983, in volume 95, issue 3, pages 343-348

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Published in The Auk, in 1902, in volume 19, pages 121-127

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Published in Journal of Mammalogy, in 1922, in volume 3, pages 40-41

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Published in Bulletin of The British Ornithologists' Club, in 2009, in volume 129, issue 2, pages 87-91

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Published in Smithsonian Institution Miscellaneous Collection, in 1914, in volume 63, pages 1-7

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Published in Smithsonian miscellaneous collections, in 1913, in volume 60, issue 22, pages 1-20

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Published in Jour Washington Acad Sci, in 1938, in volume 28, pages 494-498

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Published in Jour Washington Acad Sci, in 1938, in volume 28, pages 498-499

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Published in Palaeontology, in 1997, in volume 40, issue 4, pages 965-1010

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Published in The Wilson Bulletin, in 1979, in volume 91, issue 1, pages 72-77

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Published in The Wilson Bulletin, in 1978, in volume 90, issue 1, pages 99-111

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Published in Phytologia, in 1971, in volume 22, issue 2, pages 83-84

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Published in Botanical Gazette, in 1911, in volume 52, issue 4, pages 328

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