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Published in Jour Washington Acad Sci, in 1931, in volume 21, pages 436-437

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Published in Madroño, in 1997, in volume 44, issue 4, pages 311-333

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Published in Annals of the Missouri Botanical Garden, in 1965, in volume 52, pages 472-475

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Published in Palaeontology, in 1996, in volume 39, issue 3, pages 605-614

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Published in Asa Gray correspondence. Senders A, pages 1-4

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Published in Journal of Arachnology, in 2002, in volume 30, issue 2, pages 211-218

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Published in Asa Gray correspondence. Senders Br-Bz, pages 1-3

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

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Published in Asa Gray correspondence. Senders A, in 1873, pages 1

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Published in Asa Gray correspondence. Senders A, in 1874, pages 1

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Published in Hedwigia, in 1877, in volume 16, pages 128

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Published in Jour Washington Acad Sci, in 1935, in volume 25, pages 190-193

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Published in Jour Washington Acad Sci, in 1938, in volume 28, pages 6-11

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Published in Journal of Arachnology, in 1998, in volume 26, issue 3, pages 291-295

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Published in Madroño, in 2001, in volume 48, issue 2, pages 90-97

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Published in Asa Gray correspondence. Senders Br-Bz, in 1850, pages 1-2

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Published in Asa Gray correspondence. Senders Br-Bz, in 1852, pages 1-3

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Published in Asa Gray correspondence. Senders Br-Bz, in 1854, pages 1-2

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Published in Asa Gray correspondence. Senders Br-Bz, in 1866, pages 1-2

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Published in Asa Gray correspondence. Senders Br-Bz, in 1866, pages 1

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Published in Asa Gray correspondence. Senders Br-Bz, in 1875, pages 1-2

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Published in Asa Gray correspondence. Senders Br-Bz, in 1866, pages 1-2

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Published in Phytologia, in 2010, in volume 92, issue 2, pages 249-255

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Published in Memoirs of the Queensland Museum, in 1997, in volume 42, pages 310

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Published in Journal of Arachnology, in 2010, in volume 38, issue 1, pages 44-48

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Published in Jour Washington Acad Sci, in 1935, in volume 25, pages 413-415

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Published in Bulletin of The African Bird Club, in 2010, in volume 17, issue 1, pages 66-70

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Published in The Beagle, in 2004, in volume 20, pages 25-29

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Published in Asa Gray correspondence. Senders Be-Bo, in 1845, pages 1

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Published in Asa Gray correspondence. Senders Be-Bo, in 1841, pages 1-2

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Published in Asa Gray correspondence. Senders B-Ba, in 1864, pages 1

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Published in Asa Gray correspondence. Senders Br-Bz, in 1864, pages 1-2

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Published in Asa Gray correspondence. Senders Br-Bz, in 1877, pages 1

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Published in Annals of the Missouri Botanical Garden, in 2002, in volume 89, pages 491-503

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