Published in Biol Bull, in 1980, in volume 158, pages 58-68

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Published in Biol Bull, in 1986, in volume 171, pages 236-247

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

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Published in The Wilson Journal of Ornithology, in 2006, in volume 118, issue 3, pages 309-315

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

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1885, pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1885, pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1885, pages 1

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1884, pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1885, pages 1-3

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Published in Asa Gray correspondence. Senders Li-Ly, 1839-1891 (inclusive), in 1863, pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1884, pages 1-2

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1884, 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 Rhodora, in 1983, in volume 85, issue 843, pages 396

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

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Published in Telopea, in 2004, in volume 10, issue 2, pages 525-541

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

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1890, pages 1

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Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1890, pages 1

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

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Published in Rhodora, in 1908, in volume 10, issue 115, pages 131-132

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Published in Rhodora, in 1983, in volume 85, issue 842, pages 271

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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 1879, in volume 4, issue 7, pages 177-180

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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 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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Published in Rhodora, in 1901, in volume 3, issue 34, pages 255-262

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Published in Rhodora, in 1982, in volume 84, issue 839, pages 452

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Published in Rhodora, in 1981, in volume 83, issue 836, pages 607

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Published in Rhodora, in 1983, in volume 85, issue 841, pages 125

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Published in Rhodora, in 1983, in volume 85, issue 842, pages 270

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Published in Rhodora, in 1983, in volume 85, issue 843, pages 395-396

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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 1893, in volume 18, issue 10, pages 378-382

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