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Published in Botanical Gazette, in 1879, in volume 4, issue 3, pages 139-140

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Published in Botanical Gazette, in 1881, in volume 6, issue 1, pages 161-162

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Published in Botanical Gazette, in 1918, in volume 66, issue 1, pages 54-60

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Published in Botanical Gazette, in 1880, in volume 5, issue 4, pages 42

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Published in Botanical Gazette, in 1921, in volume 71, issue 4, pages 314-326

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Published in Palaeontology, in 1961, in volume 4, issue 3, pages 425-427

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Published in Asa Gray correspondence. Senders A, in 1886, pages 1-2

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Published in Madroño, in 1941, in volume 6, issue 3, pages 82-84

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Published in Asa Gray correspondence. Senders A, in 1876, pages 1-2

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Published in Rhodora, in 1981, in volume 83, issue 835, pages 474

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Published in Biol Bull, in 1957, in volume 112, pages 371-376

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Published in Madroño, in 1931, in volume 2, issue 5, pages 42-44

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Published in Biol Bull, in 1915, in volume 29, pages 262-276

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Published in Botanical Gazette, in 1882, in volume 7, issue 6, pages 73

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Published in Botanical Gazette, in 1907, in volume 43, issue 4, pages 286-287

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Published in Madroño, in 1992, in volume 39, issue 3, pages 245-250

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Published in Torreya, in 1908, in volume 8, issue 12, pages 287-292

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Published in Muelleria, in 2006, in volume 24, pages 25-30

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Published in Biol Bull, in 1935, in volume 68, pages 215-230

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Published in Annals of Carnegie Museum, in 1982, in volume 51, pages 231-249

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Published in William Marriot Canby letters to Asa Gray, 1861-1895, pages 1-2

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Published in Entomological News Philadelphia, in 1940, in volume 51, pages 37-42

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Published in The Wilson Journal of Ornithology, in 2006, in volume 118, issue 4, pages 583-584

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Published in Rhodora, in 1901, in volume 3, issue 36, pages 285-288

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Published in Rhodora, in 1901, in volume 3, issue 28, pages 67-71

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