Authors: Timothy H Jefferson

Published in Palaeontology, in 1982, in volume 25, issue 4, pages 681-708

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Authors: Timothy H Jefferson

Published in Palaeontology, in 1987, in volume 30, issue 2, pages 233-249

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Authors: A H Felger

Published in The Auk, in 1917, in volume 34, pages 209-210

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Authors: Horace W Wright

Published in The Auk, in 1915, in volume 32, pages 240-241

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Authors: A H Clark

Published in Journal of The Washington Academy of Sciences, in 1943, in volume 33, pages 193-203

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Authors: T Jefferson Coolidge

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

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Authors: Paulo H Labiak | Jefferson Prado

Published in American Fern Journal, in 2007, in volume 97, pages 113-123

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Authors: Jefferson Prado | Paulo H Labiak

Published in American Fern Journal, in 2001, in volume 91, pages 229

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Authors: Robbin C Moran | Jefferson Prado | Paulo H Labiak

Published in American Fern Journal, in 2009, in volume 99, pages 1-44

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Authors: Timothy H Goldsmith | Donald R Griffin

Published in Biol Bull, in 1956, in volume 111, pages 235-239

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Authors: Donald R Griffin | Timothy H Goldsmith

Published in Biol Bull, in 1955, in volume 108, pages 264-276

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Authors: Lucia Stanton

Published in Banisteria, in 2013, in volume 41, pages 5-16

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Authors: Jefferson Prado

Published in American Fern Journal, in 1993, in volume 83, pages 129-130

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Authors: Jefferson Prado

Published in American Fern Journal, in 2004, in volume 94, pages 112

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Authors: H H Brackenridge

Published in Transactions of the American Philosophical Society, in 1818, in volume 1, pages 151-159

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Published in Botanical Gazette, in 1910, in volume 50, issue 5, pages 392-393

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Authors: Jefferson Prado

Published in American Fern Journal, in 2003, in volume 93, pages 76-80

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Authors: Timothy F Allen

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

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Authors: Timothy F Allen

Published in Asa Gray correspondence. Senders A, in 1880, pages 1-2

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Authors: Timothy F Allen

Published in Asa Gray correspondence. Senders A, in 1881, pages 1

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Authors: Timothy F Allen

Published in Asa Gray correspondence. Senders A, in 1882, pages 1

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Authors: Timothy A Lyerla | Joann H Lyerla | Marilyn Fisher

Published in Biol Bull, in 1975, in volume 149, pages 178-185

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Authors: Arne E Jensen | Timothy H Fisher | Robert O Hutchinson

Published in Forktail, in 2015, in volume 31, pages 24-36

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Authors: Jefferson J Gonor

Published in Veliger, in 1965, in volume 7, pages 228-232

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Authors: Philip D Round | Timothy H Fisher

Published in Forktail, in 2009, in volume 25, pages 159-160

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Authors: William Dunbar | Thomas Jefferson

Published in Transactions of the American Philosophical Society, in 1809, in volume 6, pages 25

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Published in The Auk, in 1905, in volume 22, pages 140-145

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Authors: Dean R Cummins | De-Mao Chen | Timothy H Goldsmith

Published in Biol Bull, in 1984, in volume 166, pages 269-276

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Authors: Timothy H Craig | Douglas K Halford | O Doyle Markham

Published in The Wilson Bulletin, in 1979, in volume 91, issue 1, pages 72-77

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Authors: Timothy H Parker

Published in The Wilson Bulletin, in 1999, in volume 111, issue 4, pages 499-504

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Authors: Jefferson Prado | Alan R Smith

Published in American Fern Journal, in 2002, in volume 92, pages 105

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Authors: Frank D Kern

Published in Torreya, in 1909, in volume 9, issue 1, pages 3-5

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Authors: Timothy F Allen

Published in Botanical Gazette, in 1880, in volume 5, issue 11, pages 140-141

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Authors: Simon H Lewis | Timothy J Entwisle

Published in Muelleria, in 1998, in volume 11, pages 51-93

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Authors: Simon H Lewis | Timothy J Entwisle

Published in Muelleria, in 2000, in volume 14, issue 3, pages 99-102

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Authors: Charles T Post | Timothy H Goldsmith

Published in Biol Bull, in 1965, in volume 128, pages 473-487

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Authors: William Dunbar | Thomas Jefferson

Published in Transactions of the American Philosophical Society, in 1809, in volume 6, pages 1-8

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Authors: Harold Jefferson Coolidge

Published in Memoirs Museum of Comparative Zoology Harvard, in 1940, in volume 54, issue 6, pages 417-531

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Authors: J K Nelson

Published in Phytologia, in 2010, in volume 92, issue 2, pages 121-150

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Authors: Jefferson Prado

Published in American Fern Journal, in 1993, in volume 83, pages 131-134

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Authors: Jefferson Prado | Michael A Sundue

Published in American Fern Journal, in 2005, in volume 95, pages 89-93

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Authors: Leonardo Biral | Jefferson Prado

Published in American Fern Journal, in 2012, in volume 102, pages 83-85

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Authors: M R Hitchcock

Published in Journal of The Washington Academy of Sciences, in 1931, in volume 21, pages 80-86

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Authors: Charles H Sullivan | Timothy K Maugel

Published in Biol Bull, in 1984, in volume 167, pages 378-389

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Authors: Warren H Wagner | Florence S Wagner | Timothy Flynn

Published in Contributions from the University of Michigan Herbarium, in 1995, in volume 20, pages 241-260

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Authors: Mónica Ponce | Jefferson Prado | Marta Morbelli

Published in American Fern Journal, in 2007, in volume 97, pages 140-148

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Authors: Timothy Plowman

Published in Botanical Museum Leaflets, Harvard University, in 1977, in volume 25, pages 289-320

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Authors: Timothy H Craig | Charles H Trost

Published in The Wilson Bulletin, in 1979, in volume 91, issue 1, pages 50-61

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Authors: G T Jefferson

Published in Contributions in Science (Los Angeles), in 1989, in volume 406, pages 1-21

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Authors: David B Lellinger | Jefferson Prado

Published in American Fern Journal, in 2001, in volume 91, pages 1-8

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