Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 37-42
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Published in Rhodora, in 1981, in volume 83, issue 835, pages 474
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Published in Rhodora, in 1983, in volume 85, issue 842, pages 270
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Published in Biol Bull, in 1957, in volume 112, pages 371-376
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Published in Great Basin Naturalist, in 1980, in volume 40, pages 190-192
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Published in Austrobaileya, in 1995, in volume 4, pages 369-379
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Published in The Auk, in 1909, in volume 26, pages 99-100
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Published in Nautilis, in 1919, in volume 32, pages 142-143
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Published in The Auk, in 1916, in volume 33, pages 207-209
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Published in The Great Basin Naturalist, in 1981, in volume 41, pages 476-477
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Published in Asa Gray correspondence. Senders A, in 1875, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1875, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1886, pages 1-2
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Published in Phytologia, in 1985, in volume 57, issue 5, pages 366
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Published in The Wilson Bulletin, in 1986, in volume 98, issue 2, pages 189-195
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Published in Palaeontology, in 1968, in volume 11, issue 4, pages 576-579
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Published in Phytologia, in 1988, in volume 64, pages 249-258
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Published in Bulletin of The British Ornithologists' Club, in 1997, in volume 117, pages 239-240
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Published in Rhodora, in 1964, in volume 66, issue 766, pages 167
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Published in Botanical Gazette, in 1917, in volume 64, issue 1, pages 1-20
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Published in The Wilson Bulletin, in 1984, in volume 96, issue 1, pages 48-59
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Published in Rhodora, in 1993, in volume 95, issue 881, pages 79-81
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Published in Asa Gray correspondence. Senders A, in 1876, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1890, pages 1
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Published in Asa Gray correspondence. Senders A, in 1891, pages 1-2
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Published in Asa Gray correspondence. Senders A, in 1876, pages 1-2
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Published in Breviora, in 1962, in volume 174, pages 1-10
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Published in The Auk, in 1912, in volume 29, pages 412
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Published in Bull Brit Ornithol Club, in 1960, in volume 80, pages 80-86
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Published in Telopea, in 1996, in volume 6, pages 851-862
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Published in Madroño, in 2001, in volume 48, issue 3, pages 162-171
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Published in Biol Bull, in 1974, in volume 146, pages 377-392
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