Authors: John W Simpson | Kenneth Allen | Jorge Awapara

Published in Biol Bull, in 1959, in volume 117, pages 371-381

Created: 2010-01-06, modified: 2011-06-21

Authors: W H Simpson

Published in Ibis, in 1861, in volume 3, issue 4, pages 361-374

Created: 2024-10-04, modified: 2024-10-04

Authors: W H Simpson

Published in Ibis, in 1860, in volume 2, issue 3, pages 279-296

Created: 2024-10-04, modified: 2024-10-04

Authors: W H Simpson

Published in Ibis, in 1860, in volume 2, issue 4, pages 375-378

Created: 2024-10-04, modified: 2024-10-04

Authors: Benny J Simpson | John P Karges | John M Carpenter

Published in Sida, Contributions To Botany, in 1992, in volume 15, issue 1, pages 153

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

Authors: W Ii Simpson

Published in Ibis, in 1860, in volume 2, issue 4, pages 378-395

Created: 2024-10-04, modified: 2024-10-04

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:

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: C T Simpson

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

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

Authors: Mark W Dodero | Michael G Simpson

Published in Madroño, in 2012, in volume 59, pages 223-229

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

Authors: John Simpson | Don Crank | James H Peck

Published in American Fern Journal, in 2008, in volume 98, pages 111-112

Created: 2017-04-23, modified: 2017-04-23

Authors: W H Simpson

Published in Ibis, in 1859, in volume 1, issue 3, pages 264-273

Created: 2024-10-04, modified: 2024-10-04

Authors: Stephen Ward Mccabe | Mark W Dodero | Michael G Simpson

Published in Madroño, in 2016, in volume 63, issue 4, pages 359-365

Created: 2025-01-13, modified: 2025-01-13

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: Leconte John Lawrence

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1860, in volume 12, pages 315-321

Created: 2011-06-01, modified: 2011-06-21

Authors: W A Shands | G W Simpson | F S Roberts |

Published in Proceedings of the Entomological Society of Washington, in 1955, in volume 57, pages 131-136

Created: 2011-06-03, modified: 2011-06-21

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: John W Chickering

Published in Asa Gray correspondence. Senders Ca-Cl, in 1859, pages 1-2

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

Authors: W Auffenberg

Published in Quarterly Journal of The Florida Academy of Sciences, in 1958, in volume 20, pages 233-237

Created: 2013-03-28, modified: 2013-03-28

Authors: D R Simpson

Published in Phytologia, in 1976, in volume 33, pages 4-8

Created: 2011-01-26, modified: 2023-02-16

Authors: D R Simpson

Published in Phytologia, in 1982, in volume 51, pages 303-322

Created: 2011-01-26, modified: 2023-02-16

Authors: C P Alexander

Published in Entomological News, in 1959, in volume 70, pages 29-32

Created: 2010-01-13, modified: 2021-04-05

Authors: D R Simpson

Published in Phytologia, in 1975, in volume 30, pages 304-316

Created: 2011-01-26, modified: 2011-06-21

Authors: Michael G Simpson | Jillian Stephens | Stella Yang

Published in Madroño, in 2020, in volume 67, issue 1, pages 5-8

Created: 2025-01-13, modified: 2025-01-13

Authors: C T Simpson

Published in Nautilis, in 1894, in volume 7, pages 110-113

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

Authors: C T Simpson

Published in Nautilis, in 1901, in volume 15, pages 77-82

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

Authors: C T Simpson

Published in Nautilis, in 1905, in volume 18, pages 137-138

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

Authors: D R Simpson

Published in Phytologia, in 1974, in volume 29, pages 277-280

Created: 2011-01-26, modified: 2023-02-16

Authors: J J Henderson | T T Simpson

Published in Nautilus, in 1902, in volume 16, pages 88-89

Created: 2011-06-14, modified: 2011-06-21

Authors: C T Simpson

Published in Nautilis, in 1897, in volume 11, pages 18-23

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

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: David A Simpson

Published in Rodriguésia, in 2006, in volume 57, issue 2, pages 171-188

Created: 2016-07-26, modified: 2023-02-16

Authors: John W Chickering

Published in Asa Gray correspondence. Senders Ca-Cl, in 1881, pages 1-2

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

Authors: John W Chickering

Published in Asa Gray correspondence. Senders Ca-Cl, in 1889, pages 1-2

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

Authors: John W Chickering

Published in Asa Gray correspondence. Senders Ca-Cl, in 1890, pages 1-2

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

Authors: John Talent | Andrew J Simpson | Peter D Molloy | Ruth Mawson

Published in Proceedings of The Royal Society of Victoria, in 2005, in volume 117, issue 2, pages 265-291

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

Authors: John W Chickering

Published in Asa Gray correspondence. Senders Ca-Cl, in 1897, pages 1

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

Authors: John W Fitzpatrick | David E Willard | John W Terborgh

Published in The Wilson Bulletin, in 1979, in volume 91, issue 2, pages 177-186

Created: 2017-08-22, modified: 2023-02-16

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: G G Simpson

Published in Breviora, in 1970, in volume 360, pages 1-13

Created: 2009-12-27, modified: 2021-04-05

Authors: Jakob Schmitt

Published in Zeitschrift für Säugetierkunde, in 1970, in volume 36, pages 380-383

Created: 2016-08-03, modified: 2016-08-03

Authors: John W Short | John D Freeman

Published in American Fern Journal, in 1978, in volume 68, pages 95

Created: 2017-04-23, modified: 2017-04-23

Authors: W L Brown

Published in Entomological news, in 1956, in volume 67, issue 8, pages 197-199

Created: 2016-12-29, modified: 2016-12-29

Authors: John Carey

Published in John Carey letters to Asa Gray, 1837-2193, in 1856, pages 1-2

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