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Published in Entomological News, in 1917, in volume 28, pages 433-437
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Published in Psyche, in 1917, in volume 24, pages 105-117
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Published in Annals of The Entomological Society of America, in 1917, in volume 10, pages 167-175
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Published in Memoirs of the Carnegie Museum, in 1925, in volume 10, issue 2, pages 93-346
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1912, in volume 64, pages 455-488
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Published in The Auk, in 1903, in volume 20, pages 319
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Published in The Auk, in 1893, in volume 10, pages 205-206
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Published in The Auk, in 1898, in volume 15, pages 264-265
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Published in The Auk, in 1910, in volume 27, pages 237-238
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Published in The Auk, in 1898, in volume 15, pages 187
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Published in American Fern Journal, in 1950, in volume 40, issue 3, pages 201
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Published in Special publication of Carnegie Museum of Natural History, in 1994, in volume 18, pages 89-95
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Published in Rhodora, in 1960, in volume 62, issue 736, pages 93-95
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Published in The Auk, in 1920, in volume 37, pages 471-472
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Published in Phytologia, in 1984, in volume 55, issue 4, pages 256
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Published in Palaeontology, in 1960, in volume 3, issue 1, pages 26-44
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Published in Ibis, in 1917, in volume 5, issue 1, pages 1-30
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Published in The Auk, in 1898, in volume 15, pages 265-267
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Published in Nautilis, in 1899, in volume 13, pages 64-67
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Published in Phytologia, in 1984, in volume 55, issue 4, pages 227-228
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Published in Rhodora, in 1945, in volume 47, issue 555, pages 90-91
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), pages 1-2
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Published in Canadian Entomologist, in 1914, in volume 46, pages 306-308
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1879, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1879, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1866, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1867, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1869, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1864, pages 1-2
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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1865, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1865, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1865, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1878, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1879, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24