Published in Entomologist's Record and Journal of Variation, in 2002, in volume 114, issue 2, pages 92-93

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Published in Palaeontology, in 1987, in volume 30, issue 4, pages 783-813

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

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

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Published in Madroño, in 1933, in volume 2, issue 12, pages 97-100

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

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

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

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Published in Victorian Naturalist, in 2007, in volume 124, issue 1, pages 45-46

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Published in Madroño, in 2008, in volume 55, issue 1, pages 89-90

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1891, pages 1

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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 1897, in volume 14, pages 399-401

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Published in Botanical Gazette, in 1887, in volume 12, issue 1, pages 19

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

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Published in The Auk, in 1898, in volume 15, pages 244-258

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Published in The Auk, in 1909, in volume 26, pages 23-36

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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 1897, in volume 14, pages 322

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Published in Ibis, in 1922, in volume 4, issue 3, pages 471-474

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Published in Rhodora, in 1942, in volume 44, pages 227

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

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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 Western Australian Naturalist, in 1947, in volume 1, issue 2, pages 40-41

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Published in Western Australian Naturalist, in 1948, in volume 1, issue 7, pages 149-151

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Published in Rhodora, in 1936, in volume 38, issue 450, pages 197-199

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Published in Rhodora, in 1945, in volume 47, issue 562, pages 332

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

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Published in Madroño, in 1939, in volume 5, issue 2, pages 72-73

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Published in Asa Gray correspondence. Senders Ca-Cl, pages 1

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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 1888, in volume 13, issue 2, pages 40

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

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Published in The Auk, in 1894, in volume 11, pages 282-291

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Published in The Auk, in 1897, in volume 14, pages 297-299

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Published in The Auk, in 1885, in volume 2, pages 304

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Published in Rhodora, in 1962, in volume 64, issue 759, pages 195-200

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

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Published in Rhodora, in 1935, in volume 37, issue 434, pages 58-59

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Published in Rhodora, in 1939, in volume 41, issue 487, pages 314-316

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Published in Entomologist's Record and Journal of Variation, in 2001, in volume 113, issue 2, pages 81-82

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Published in Sida, Contributions To Botany, in 2005, in volume 21, issue 3, pages 1781-1791

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Published in Torreya, in 1908, in volume 8, issue 5, pages 103-110

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Published in Ibis, in 1906, in volume 6, issue 1, pages 46-52

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Published in The Wilson Bulletin, in 1977, in volume 89, issue 3, pages 505

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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 1896, in volume 13, pages 99-108

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Published in Rhodora, in 1961, in volume 63, issue 748, pages 118-119

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