Published in The Auk, in 1905, in volume 22, pages 438-439

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Published in The Auk, in 1915, in volume 32, pages 133-134

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Published in The Auk, in 1900, in volume 17, pages 314-315

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Published in The Auk, in 1897, in volume 14, pages 225-226

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Published in The Auk, in 1913, in volume 30, pages 128

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Published in The Auk, in 1918, in volume 35, pages 240-241

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Published in The Auk, in 1902, in volume 19, pages 111

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Published in Science, in 1903, in volume 17, issue 439, pages 873

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Published in The Auk, in 1919, in volume 36, pages 591-592

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Published in The Auk, in 1904, in volume 21, pages 309-310

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Published in The Auk, in 1916, in volume 33, pages 322-324

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Published in The Auk, in 1906, in volume 23, pages 98-99

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Published in The Auk, in 1911, in volume 28, pages 511-512

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Published in The Auk, in 1901, in volume 18, pages 123-124

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Published in The Auk, in 1906, in volume 23, pages 241-242

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Published in The Auk, in 1892, in volume 9, pages 308-310

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Published in The Auk, in 1918, in volume 35, pages 65-73

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Published in The Auk, in 1919, in volume 36, pages 90-99

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Published in The Auk, in 1913, in volume 30, pages 582

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Published in The Auk, in 1920, in volume 37, pages 110-125

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Published in The Auk, in 1894, in volume 11, pages 39-45

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Published in Botanical Gazette, in 1895, in volume 20, issue 1, pages 32

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Published in Proceedings of The Biological Society of Washington, in 1900, in volume 13, pages 23-24

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Published in The Auk, in 1917, in volume 34, pages 445-452

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Published in Proceedings of the Biological Society of Washington, in 1906, in volume 19, pages 97

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Published in The Auk, in 1912, in volume 29, pages 531-532

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Published in Rhodora, in 1955, in volume 57, issue 674, pages 71-72

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Published in Palaeontology, in 1982, in volume 25, issue 4, pages 897-903

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Published in Proceedings of the Biological Society of Washington, in 1898, in volume 12, pages 109-114

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Published in Proceedings of The Biological Society of Washington, in 1900, in volume 13, pages 71-73

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Published in The Auk, in 1899, in volume 16, pages 294-295

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Published in The Auk, in 1917, in volume 34, pages 119-132

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Published in American Fern Journal, in 1931, in volume 21, pages 132-136

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Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 133-134

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Published in Proceedings of the Biological Society of Washington, in 1928, in volume 41, pages 87-88

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Published in Proceedings of The Biological Society of Washington, in 1897, in volume 11, pages 241-270

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Published in Proceedings of The Biological Society of Washington, in 1897, in volume 11, pages 173-174

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Published in Western Australian Naturalist, in 1961, in volume 8, issue 1, pages 30-32

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Published in Proceedings of The Biological Society of Washington, in 1926, in volume 39, pages 21-28

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Published in Botanical Gazette, in 1896, in volume 21, issue 4, pages 218-223

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Published in Palaeontology, in 1984, in volume 27, issue 4, pages 815-824

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Published in Palaeontology, in 1974, in volume 17, issue 3, pages 507-524

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Published in Palaeontology, in 1981, in volume 24, issue 1, pages 1-23

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Published in The Auk, in 1915, in volume 32, pages 391-405

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1910, in volume 62, pages 460-463

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Published in Pacific Science, in 1950, in volume 4, issue 1, pages 50-54

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Published in The Wilson Bulletin, in 1940, in volume 52, issue 4, pages 278

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Published in Palaeontology, in 1988, in volume 31, issue 4, pages 939-949

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Published in Pacific Science, in 1955, in volume 9, issue 3, pages 304-317

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1905, in volume 57, pages 665-675

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