Authors: George Gaylord Simpson

Published in Jour Washington Acad Sci, in 1940, in volume 30, pages 137-163

Created: 2014-01-30, modified: 2025-12-03

Authors: B B Simpson

Published in Phytoneuron, in 2013, in volume 2013-62, pages 1

Created: 2016-04-29, modified: 2016-04-29

Authors: George Gaylord Simpson

Published in Jour Washington Acad Sci, in 1941, in volume 31, pages 1-20

Created: 2014-01-30, modified: 2025-12-03

Authors: George Gaylord Simpson

Published in Postilla, in 1968, in volume 115, pages 1-3

Created: 2013-03-01, modified: 2013-03-01

Authors: George Gaylord Simpson

Published in Mem. natn. Mus. Vict., in 1970, in volume 31, pages 17-23

Created: 2012-05-17, modified: 2012-05-17

Authors: George Gaylord Simpson

Published in Proceedings of The Royal Society of Victoria, in 1959, in volume 71, issue 2, pages 113-119

Created: 2020-07-02, modified: 2020-07-02

Authors: George Gaylord Simpson

Published in Annals of The Carnegie Museum, in 1929, in volume 19, pages 115-122

Created: 2017-01-09, modified: 2025-12-17

Authors: G G Simpson

Published in Bulletin of The Museum of Comparative Zoology, in 1962, in volume 127, pages 237-293

Created: 2009-12-23, modified: 2021-04-05

Authors: B Simpson

Published in Proceedings of The Zoological Society of London, in 1869, in volume 1869, pages 507

Created: 2012-10-01, modified: 2012-10-01

Authors: George Gaylord Simpson

Published in Proceedings of The Royal Society of Victoria, in 1965, in volume 79, issue 1, pages 91-93

Created: 2020-07-02, modified: 2020-07-02

Authors: George Gaylord Simpson

Published in Proceedings of The Royal Society of Victoria, in 1969, in volume 82, issue 2, pages 149-160

Created: 2020-07-02, modified: 2020-07-02

Authors: B B Simpson | A Burkart | N J Carman

Published in Madroño, in 1975, in volume 23, issue 4, pages 220-227

Created: 2016-02-15, modified: 2023-02-16

Authors: George Gaylord Simpson

Published in Proceedings of The United States National Museum, in 1935, in volume 83, pages 221-244

Created: 2011-06-30, modified: 2017-01-06

Authors: George Gaylord Simpson

Published in Records of The South Australian Museum, in 1957, in volume 13, pages 51-70

Created: 2013-01-14, modified: 2013-01-14

Authors: Guy L Nesom | Youngbae Suh | Beryl B Simpson

Published in Phytologia, in 1993, in volume 75, issue 5, pages 341-346

Created: 2016-05-05, modified: 2016-05-06

Authors: A N B Simpson

Published in Entomologist's Record and Journal of Variation, in 1981, in volume 93, issue 3-4, pages 45

Created: 2016-09-01, modified: 2016-09-01

Authors: B Gray | Larry Simpson

Published in Austrobaileya, in 2021, in volume 11, pages 115-117

Created: 2023-08-13, modified: 2025-12-17

Authors: J L Neff | B B Simpson

Published in Pan-Pacific Entomologist, in 1992, in volume 68, issue 1, pages 15-26

Created: 2018-07-03, modified: 2018-07-03

Authors: George B Simpson

Published in Transactions of the American Philosophical Society, in 1890, in volume 16, issue 3, pages 435-460

Created: 2026-05-26, modified: 2026-05-26

Authors: A N B Simpson

Published in Entomologist's Record and Journal of Variation, in 1988, in volume 100, issue 7-8, pages 189

Created: 2016-09-01, modified: 2016-09-01

Authors: Michael G Simpson | Regina A Dowdy | Lee M Simpson | Jon P Rebman | Ronald B Kelley

Published in Madroño, in 2014, in volume 61, pages 259-275

Created: 2017-05-28, modified: 2017-05-28

Authors:

Published in Nautilus Philadelphia, in 1928, in volume 42, pages 66

Created: 2014-12-03, modified: 2014-12-03

Authors: Robert C Simpson | R Ann Simpson

Published in Banisteria, in 2005, in volume 26, pages 17

Created: 2020-06-14, modified: 2020-06-14

Authors: Beryl B Simpson | John L Neff

Published in Annals of the Missouri Botanical Garden, in 1981, in volume 68, pages 301-322

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

Authors: A N B Simpson

Published in Entomologist's Record and Journal of Variation, in 1984, in volume 96, issue 1-2, pages 32-33

Created: 2016-09-01, modified: 2016-09-01

Authors: George B Emerson

Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1864, pages 1

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

Authors: George B Emerson

Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1870, pages 1-2

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

Authors: George B Emerson

Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1874, pages 1-2

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

Authors: George B Emerson

Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1846, pages 1

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

Authors: George B Emerson

Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1857, pages 1-2

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

Authors: C T Simpson

Published in Nautilis, in 1889, in volume 3, pages 5-8

Created: 2013-09-28, modified: 2013-09-28

Authors: George B Rossbach

Published in Rhodora, in 1939, in volume 41, issue 484, pages 113-128

Created: 2016-07-19, modified: 2023-02-16

Authors: A N B Simpson

Published in Entomologist's Record and Journal of Variation, in 1996, in volume 108, issue 5-6, pages 145-146

Created: 2016-09-01, modified: 2016-09-01

Authors: George B Emerson

Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1846, pages 1

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

Authors: A N B Simpson

Published in Entomologist's Record and Journal of Variation, in 1996, in volume 108, issue 7-8, pages 194-195

Created: 2016-09-01, modified: 2016-09-01

Authors: George B Rigg

Published in Botanical Gazette, in 1916, in volume 62, issue 4, pages 336

Created: 2017-03-14, modified: 2017-03-14

Authors: C T Simpson

Published in Nautilis, in 1894, in volume 8, pages 91-92

Created: 2013-09-28, modified: 2013-09-28

Authors: C T Simpson

Published in Nautilis, in 1889, in volume 3, pages 78-80

Created: 2013-09-28, modified: 2013-09-28

Authors: C T Simpson

Published in Nautilis, in 1922, in volume 35, pages 65-73

Created: 2013-09-28, modified: 2013-09-28

Authors: C T Simpson

Published in Nautilis, in 1921, in volume 35, pages 20-22

Created: 2013-09-28, modified: 2013-09-28

Authors: George B Buckton

in 1903, pages 1-296

Created: 2013-06-08, modified: 2023-02-16

Authors: George B Rigg

Published in Torreya, in 1916, in volume 16, issue 12, pages 257-260

Created: 2022-12-14, modified: 2022-12-14

Authors: C T Simpson

Published in Nautilis, in 1893, in volume 7, pages 22-23

Created: 2013-09-28, modified: 2013-09-28

Authors: C T Simpson

Published in Nautilis, in 1896, in volume 10, pages 29-30

Created: 2013-09-28, modified: 2013-09-28

Authors: C T Simpson

Published in Nautilis, in 1890, in volume 4, pages 79-81

Created: 2013-09-28, modified: 2013-09-28

Authors: Heidi M Meudt | Beryl B Simpson

Published in Annals of the Missouri Botanical Garden, in 2007, in volume 94, issue 3, pages 554-570

Created: 2024-06-27, modified: 2024-06-27

Authors: Guy L Nesom | Youngbae Suh | David R Morgan | Beryl B Simpson

Published in Sida, Contributions To Botany, in 1990, in volume 14, issue 1, pages 101-116

Created: 2015-12-02, modified: 2015-12-02

Authors: Review By: Kevin D Janni

Published in Sida, Contributions To Botany, in 2001, in volume 19, issue 3, pages 759-760

Created: 2015-12-02, modified: 2015-12-02

Authors: George B Rigg

Published in Botanical Gazette, in 1915, in volume 59, issue 5, pages 419-420

Created: 2017-03-14, modified: 2017-03-14

Authors: George B Rigg

Published in Botanical Gazette, in 1916, in volume 61, issue 4, pages 295-310

Created: 2017-03-14, modified: 2017-03-14