Published in Rhodora, in 1935, in volume 37, issue 434, pages 58-59

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Published in Pacific Science, in 1950, in volume 4, issue 3, pages 228-248

Created: 2017-09-10, modified: 2017-09-10

Published in Biol Bull, in 1985, in volume 168, pages 377-394

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Published in Annals of the Missouri Botanical Garden, in 1954, in volume 41, pages 329-338

Created: 2010-01-08, modified: 2015-12-16

Published in Madroño, in 1970, in volume 20, issue 8, pages 398-408

Created: 2016-02-15, modified: 2016-07-07

Published in Journal of Mammalogy, in 1921, in volume 2, pages 32-35

Created: 2013-03-08, modified: 2018-04-12

Published in Acta Botánica Mexicana, in 2013, in volume 104, pages 107-156

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Published in Palaeontology, in 1998, in volume 41, issue 3, pages 387-421

Created: 2016-04-22, modified: 2016-04-22

Published in Novon, in 2006, in volume 16, pages 168-204

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Published in Acta Botánica Mexicana, in 2014, in volume 109, pages 23-43

Created: 2016-05-12, modified: 2017-04-27

Published in Madroño, in 2005, in volume 52, pages 270-271

Created: 2016-02-15, modified: 2016-07-07

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

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders A, in 1837, pages 1-2

Created: 2017-06-18, modified: 2017-06-18

Published in Asa Gray correspondence. Senders A, in 1837, pages 1-3

Created: 2017-06-18, modified: 2017-06-18

Published in Annals of the Missouri Botanical Garden, in 1954, in volume 41, pages 395-418

Created: 2010-01-08, modified: 2015-12-16

Published in Contributions from the University of Michigan Herbarium, in 1975, in volume 11, issue 2, pages 41-50

Created: 2016-07-11, modified: 2016-07-11

Published in Acta Botánica Mexicana, in 2006, in volume 74, pages 179-183

Created: 2018-05-21, modified: 2018-05-21

Published in The Wilson Bulletin, in 1994, in volume 106, issue 3, pages 537-548

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Published in Journal of The Adelaide Botanic Garden, in 1980, in volume 2, issue 2, pages 139-149

Created: 2022-11-15, modified: 2022-11-15

Published in Proceedings of the Biological Society of Washington, in 1971, in volume 83, pages 469-476

Created: 2011-05-28, modified: 2011-10-03

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1879, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1879, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1866, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1867, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1869, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1864, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1865, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1865, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1865, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1878, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1879, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1880, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

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

Created: 2017-06-24, modified: 2017-06-24

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

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1887, pages 1

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1882, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1882, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1883, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1883, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1881, pages 1-2

Created: 2017-06-24, modified: 2017-06-24

Published in Asa Gray correspondence. Senders Co-Cu, 1826-1891 (inclusive), in 1882, pages 1-2

Created: 2017-06-24, modified: 2017-06-24