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Published in Madroño, in 1953, in volume 12, issue 2, pages 64

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Published in Torreya, in 1904, in volume 4, issue 3, pages 33-35

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Published in Rhodora, in 1914, in volume 16, issue 185, pages 96

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Published in Rhodora, in 1903, in volume 5, issue 49, pages 32-35

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Published in Madroño, in 2012, in volume 59, pages 231

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Published in Novapex, in 2013, in volume 14, issue 4, pages 87-92

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Published in Bulletin of Zoological Nomenclature, in 2000, in volume 57, issue 2, pages 126-127

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Published in Transactions of The Linnean Society of London, in 1791, in volume 1, pages 76-80

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Published in Transactions of The Linnean Society of London, in 1794, in volume 2, pages 242-244

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Published in Transactions of The Linnean Society of London, in 1802, in volume 6, pages 99-102

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Published in Novapex, in 2013, in volume 14, issue 3, pages 77-79

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Published in Rhodora, in 1915, in volume 17, issue 198, pages 128

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Published in Zoologica, in 1973, in volume 57, issue 6, pages 105-108

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Published in Transactions of The Linnean Society of London, in 1808, in volume 9, pages 268-271

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Published in Annals of the Missouri Botanical Garden, in 1966, in volume 53, pages 258-259

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Published in Transactions of The Linnean Society of London, in 1807, in volume 8, pages 1-16

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Published in Rhodora, in 1913, in volume 15, issue 174, pages 116

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Published in Transactions of The Linnean Society of London, in 1807, in volume 8, pages 300-307

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1851, in volume 5, pages 267-272

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Published in Biol Bull, in 1962, in volume 122, pages 380-390

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Published in Phytologia, in 1975, in volume 30, pages 281-283

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Published in Annals And Magazine of Natural History, in 1871, in volume 7, pages 451

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Published in Phytologia, in 1983, in volume 53, issue 3, pages 226-234

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Published in Transactions of The Linnean Society of London, in 1807, in volume 8, pages 286-290

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Published in Bulletin of Zoological Nomenclature, in 1998, in volume 55, issue 4, pages 217-219

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Published in Biol Bull, in 1918, in volume 34, pages 277-306

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Published in Annals And Magazine of Natural History, in 1848, in volume 2, pages 150-151

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Published in Proceedings of The American Philosophical Society, in 1916, in volume 55, issue 220, pages 348-356

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Published in Zoologica, in 1973, in volume 57, issue 7, pages 109-117

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Published in Transactions of The Linnean Society of London, in 1807, in volume 8, pages 325-329

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Published in Apex (Brussels), in 1999, in volume 14, issue 3-4, pages 73-80

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Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1851, in volume 5, pages 247-254

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in 1879, pages 1

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Published in Annals and Magazine of Natural History, in 1846, in volume 18, pages 181-185

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Published in American Journal of Science And Arts, in 1849, in volume 8, pages 135-140

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Published in American Journal of Science And Arts, in 1851, in volume 12, pages 121-131

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Published in Madroño, in 1981, in volume 28, issue 1, pages 45-47

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Published in Madroño, in 2005, in volume 52, pages 258-261

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Published in Madroño, in 1997, in volume 44, issue 4, pages 374-383

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Published in British Journal of Entomology And Natural History, in 1994, in volume 7, pages 59-65

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Published in Biol Bull, in 1973, in volume 145, pages 127-139

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Published in Biol Bull, in 1976, in volume 151, pages 96-107

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Published in Annals And Magazine of Natural History, in 1846, in volume 18, pages 212-214

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Published in American Journal of Science And Arts, in 1851, in volume 12, pages 283-290

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Published in Proceedings of The American Philosophical Society, in 1911, in volume 50, issue 199, pages 147-167

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Published in Rhodora, in 1914, in volume 16, issue 185, pages 90

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Published in The Great Basin Naturalist, in 1981, in volume 41, pages 176-183

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Published in Transactions of The Linnean Society of London, in 1808, in volume 9, pages 296-300

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Published in Entomologist's Record and Journal of Variation, in 1996, in volume 108, issue 7-8, pages 197-198

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