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Published in Rhodora, in 1900, in volume 2, issue 20, pages 179-180
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Published in Rhodora, in 1901, in volume 3, issue 28, pages 84-87
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Published in Rhodora, in 1961, in volume 63, issue 750, pages 175-176
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Published in Botanical Gazette, in 1918, in volume 66, issue 4, pages 382
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Published in Torreya, in 1906, in volume 6, issue 1, pages 1-5
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Published in Biol Bull, in 1910, in volume 20, pages 14-18
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Published in Annals of the Missouri Botanical Garden, in 1992, in volume 79, pages 718-729
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