Published in Proceedings of The American Philosophical Society, in 1894, in volume 33, issue 144, pages 5-9

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Published in Proceedings of The American Philosophical Society, in 1894, in volume 33, issue 146, pages 282-309

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Published in Phytologia, in 1965, in volume 12, issue 5, pages 249-251

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Published in Phytologia, in 1973, in volume 25, issue 6, pages 418-419

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Published in Phytologia, in 1973, in volume 27, issue 4, pages 209-227

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Published in Rhodora, in 1969, in volume 71, pages 35-57

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Published in Phytologia, in 1953, in volume 4, issue 4, pages 213-219

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Published in Phytologia, in 1953, in volume 4, issue 5, pages 355-368

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Published in Phytologia, in 1955, in volume 5, issue 7, pages 281-288

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Published in Phytologia, in 1956, in volume 5, issue 8, pages 394-400

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Published in Phytologia, in 1956, in volume 5, issue 9, pages 401-403

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Published in Phytologia, in 1959, in volume 7, issue 1, pages 1-6

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Published in Phytologia, in 1961, in volume 8, issue 1, pages 1-13

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Published in Phytologia, in 1963, in volume 8, issue 9, pages 497-507

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Published in Phytologia, in 1963, in volume 9, issue 4, pages 242-261

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Published in Phytologia, in 1967, in volume 14, issue 8, pages 457-491

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Published in Phytologia, in 1968, in volume 16, issue 6, pages 459-463

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Published in Rhodora, in 1946, in volume 48, issue 570, pages 136

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Published in Rhodora, in 1969, in volume 71, pages 220-279

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Published in Rhodora, in 1953, in volume 55, issue 650, pages 58-59

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Published in Rhodora, in 1928, in volume 30, issue 350, pages 35

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Published in Phytologia, in 1983, in volume 53, issue 3, pages 177-178

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Published in Phytologia, in 1983, in volume 53, issue 6, pages 432-444

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Published in Phytologia, in 1985, in volume 57, issue 2, pages 152

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Published in Rhodora, in 1937, in volume 39, issue 463, pages 275-276

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Published in Phytologia, in 1979, in volume 44, pages 233-256

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Published in Phytologia, in 1935, in volume 1, issue 3, pages 138-139

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Published in Phytologia, in 1963, in volume 8, issue 9, pages 507-514

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Published in Rhodora, in 1948, in volume 50, issue 593, pages 132

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Published in Smithsonian miscellaneous collections, in 1955, in volume 126, issue 1, pages 1-290

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Published in PHYTOLOGIA, in 1967, in volume 14, issue 8, pages 492-506

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Published in Phytologia, in 1984, in volume 56, pages 16

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Published in Rhodora, in 1929, in volume 31, issue 362, pages 36

Created: 2014-06-16, modified: 2016-07-26

Published in Proceedings of The American Philosophical Society, in 1918, in volume 57, issue 220, pages 627-631

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Published in Phytologia, in 1977, in volume 38, issue 2, pages 135-148

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Published in Phytologia, in 1983, in volume 52, issue 7, pages 441-451

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Published in Phytologia, in 1984, in volume 55, issue 2, pages 112

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Published in Proceedings of The American Philosophical Society, in 1895, in volume 34, issue 149, pages 381-384

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Published in Phytologia, in 1970, in volume 20, issue 6, pages 390

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Published in Phytologia, in 1987, in volume 63, issue 6, pages 439-440

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Published in Proceedings of The American Philosophical Society, in 1894, in volume 33, issue 145, pages 192-215

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Published in Proceedings of The American Philosophical Society, in 1915, in volume 54, issue 220, pages 359-370

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Published in The Wilson Bulletin, in 1902, in volume 14, issue 4, pages 140-143

Created: 2016-11-27, modified: 2016-11-27

Published in PHYTOLOGIA, in 1964, in volume 10, issue 6, pages 422-453

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Published in Journal of the Washington Academy of Sciences, in 1955, in volume 45, pages 197-200

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Published in The Wilson Bulletin, in 1901, in volume 13, issue 4, pages 13-15

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Published in The Wilson Bulletin, in 1900, in volume 12, issue 3, pages 9

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Published in Annals of the Missouri Botanical Garden, in 1986, in volume 73, pages 689-721

Created: 2010-01-08, modified: 2015-12-16

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1900, in volume 52, pages 464

Created: 2013-03-02, modified: 2013-03-02

Published in Proceedings of The American Philosophical Society, in 1895, in volume 34, issue 149, pages 384-388

Created: 2017-01-01, modified: 2017-01-01