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Published in The Wilson Bulletin, in 1917, in volume 29, issue 4, pages 177-182

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Published in The Wilson Bulletin, in 1921, in volume 33, issue 3, pages 159

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Published in Biol Bull, in 1965, in volume 128, pages 102-111

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Published in The Auk, in 1905, in volume 22, pages 228

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Published in The Auk, in 1895, in volume 12, pages 287-288

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Published in The Auk, in 1907, in volume 24, pages 453

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Published in The Auk, in 1905, in volume 22, pages 429-434

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Published in Ibis, in 1869, in volume 5, issue 2, pages 170-186

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Published in Rhodora, in 1905, in volume 7, issue 84, pages 269

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Published in Madroño, in 1946, in volume 8, issue 6, pages 193-195

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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Published in The Wilson Bulletin, in 1951, in volume 63, issue 3, pages 218

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Published in Journal of The Arnold Arboretum, in 1982, in volume 63, issue 1, pages 63-81

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Published in The Auk, in 1910, in volume 27, pages 357-358

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Published in The Wilson Bulletin, in 1979, in volume 91, issue 2, pages 202-221

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Published in Torreya, in 1904, in volume 4, issue 1, pages 5-8

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Published in Rhodora, in 1959, in volume 61, issue 725, pages 127-136

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Published in The Auk, in 1903, in volume 20, pages 64

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Published in Asa Gray correspondence. Senders Br-Bz, in 1886, pages 1

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