Published in Madroño, in 1984, in volume 31, issue 3, pages 189-190

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Published in Phytologia, in 1991, in volume 71, pages 390-413

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Published in Madroño, in 2001, in volume 48, issue 2, pages 123-127

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Published in Sida, Contributions To Botany, in 2005, in volume 21, issue 4, pages 2195-2203

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Published in Sida, Contributions To Botany, in 1983, in volume 10, issue 2, pages 123-141

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Published in The Great Basin Naturalist, in 1985, in volume 45, issue 3, pages 395-422

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Published in Sida, Contributions To Botany, in 2006, in volume 22, issue 2, pages 905-914

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Published in Journal of The Botanical Research Institute of Texas, in 2009, in volume 3, issue 1, pages 51-58

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Published in Journal of The Botanical Research Institute of Texas, in 2010, in volume 4, issue 2, pages 587-594

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Published in Sida, Contributions To Botany, in 2004, in volume 21, issue 2, pages 683-692

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Published in Sida, Contributions To Botany, in 2005, in volume 21, issue 3, pages 1419-1453

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Published in Madroño, in 1984, in volume 31, issue 2, pages 123-127

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Published in Journal of The Botanical Research Institute of Texas, in 2011, in volume 5, issue 2, pages 421-426

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Published in Novon, in 1998, in volume 8, pages 187-202

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Published in Phytologia, in volume 83, pages 85-88

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Published in The Auk, in 1893, in volume 10, pages 346

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Published in Madroño, in 1981, in volume 28, issue 2, pages 86-90

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1856, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1863, pages 1-2

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1865, pages 1-4

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Published in The Wilson Bulletin, in 1930, in volume 42, issue 2, pages 109-110

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Published in Adansonia, in 1978, in volume 18, issue 3, pages 365-373

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Published in Bulletin of The African Bird Club, in 2012, in volume 19, issue 2, pages 240-241

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Published in Ibis, in 1922, in volume 4, issue 3, pages 572

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Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 409-491

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Published in Madroño, in 1981, in volume 28, issue 3, pages 159-162

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Published in Madroño, in 1981, in volume 28, issue 3, pages 188-190

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Published in The Auk, in 1904, in volume 21, pages 305-306

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Published in Biol Bull, in 1975, in volume 148, pages 357-369

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Published in Asa Gray correspondence. Senders He-Hi, 1846-1891 (inclusive), in 1849, pages 1-2

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Published in Asa Gray correspondence. Senders He-Hi, 1846-1891 (inclusive), in 1849, pages 1-2

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Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1-3

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Published in The Auk, in 1907, in volume 24, pages 450-451

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Published in The Auk, in 1890, in volume 7, pages 74-77

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Published in Psyche: A Journal of Entomology, in 1974, in volume 81, issue 1, pages 155-166

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Published in Madroño, in 1990, in volume 37, issue 3, pages 195-199

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Published in Ibis, in 1921, in volume 3, issue 2, pages 317-319

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Published in Rhodora, in 1960, in volume 62, issue 739, pages 201-203

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Published in The Auk, in 1895, in volume 12, pages 70-71

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Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 95, pages 650

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Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1-3

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