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Published in Transactions of the Kansas Academy of Science, Topeka, in 1878, in volume 6, pages 77-86
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Published in Proceedings of The Biological Society of Washington, in 1922, in volume 35, pages 117-123
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Published in Annals of the Missouri Botanical Garden, in 1966, in volume 53, pages 376
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Published in Annals of the Missouri Botanical Garden, in 1967, in volume 54, pages 184
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Published in Rhodora, in 1926, in volume 28, issue 2, pages 31-34
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Published in Rhodora, in 1903, in volume 5, issue 57, pages 213-219
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Published in Rhodora, in 1946, in volume 48, issue 575, pages 391
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Published in Botanical Gazette, in 1900, in volume 29, issue 6, pages 437-441
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Published in Zitteliana, in 1982, in volume 10, pages 359-369
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Published in The Auk, in 1903, in volume 20, pages 38-42
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Published in Ibis, in 1884, in volume 2, issue 3, pages 234-240
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Published in Rhodora, in 1914, in volume 16, issue 181, pages 19-20
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