Authors: Mark H Secrist | William R Evitt

Published in Journal of The Washington Academy of Sciences, in 1943, in volume 33, pages 358-368

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Authors: R P Tripp | W R Evitt

Published in Palaeontology, in 1986, in volume 29, issue 4, pages 705-724

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Authors: William R Gerard

Published in Asa Gray correspondence. Senders Ga-Go, 1835-1891 (inclusive), in 1887, pages 1-2

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Authors: William R Maxon

Published in Torreya, in 1903, in volume 3, issue 12, pages 184-185

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Authors: William R Linke

Published in Rhodora, in 1963, in volume 65, issue 763, pages 273

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Authors: William R Buck | William C Steere

Published in Moscosoa, in 1983, in volume 2, pages 28-53

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Authors: William R Maxon

Published in American Fern Journal, in 1928, in volume 18, pages 94-95

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Authors: William R Anderson

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

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Authors: William R Dudley

Published in Botanical Gazette, in 1888, in volume 13, issue 12, pages 305-311

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Authors: William R Dudley

Published in Botanical Gazette, in 1888, in volume 13, issue 3, pages 64-65

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Authors: William R Maxon

Published in Rhodora, in 1918, in volume 20, issue 229, pages 19-20

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Authors: William R Maxon

Published in American Fern Journal, in 1915, in volume 5, pages 1-4

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Authors: William R Maxon

Published in American Fern Journal, in 1917, in volume 7, pages 104-106

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Authors: William R Maxon

Published in American Fern Journal, in 1919, in volume 9, pages 1-5

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Authors: William R Maxon

Published in American Fern Journal, in 1919, in volume 9, pages 67-73

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Authors: William R Maxon

Published in American Fern Journal, in 1925, in volume 15, pages 16-19

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Authors: William R Maxon

Published in American Fern Journal, in 1925, in volume 15, pages 54-57

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Authors: William R Maxon

Published in American Fern Journal, in 1928, in volume 18, pages 1-6

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Authors: William R Maxon

Published in American Fern Journal, in 1928, in volume 18, pages 46-51

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Authors: William R Maxon

Published in American Fern Journal, in 1931, in volume 21, pages 136-139

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Authors: William R Maxon

Published in American Fern Journal, in 1962, in volume 52, pages 110

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Authors: William R Maxon

Published in Botanical Gazette, in 1905, in volume 39, issue 5, pages 366-369

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Authors: William R Hunter

Published in Glasgow Naturalist, in 2006, in volume 24, issue 4, pages 39-47

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Authors: William R Wayman | R Glenn Thomas | Terrence R Tiersch

Published in Gulf Research Reports, in 1996, in volume 9, issue 3, pages 183-188

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Authors: William R Anderson

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

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Authors: William R Maxon

Published in American Fern Journal, in 1917, in volume 7, pages 106-109

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Authors: William R Maxon

Published in American Fern Journal, in 1919, in volume 9, pages 38-48

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Authors: William R Buck

Published in American Fern Journal, in 1978, in volume 68, pages 33-36

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Authors: John R Reeder | Charlotte G Reeder

Published in Rhodora, in 1960, in volume 62, issue 741, pages 245-250

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Authors: William R Evans

Published in The Wilson Bulletin, in 1994, in volume 106, issue 1, pages 55-61

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Authors: William R Maxon

Published in Journal of The Arnold Arboretum, in 1946, in volume 27, issue 4, pages 438-441

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Authors: B R Maslin | R S Cowan

Published in Nuytsia, in 1994, in volume 9, issue 3, pages 387-398

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Authors: William R Jeffery

Published in Biol Bull, in 1984, in volume 166, pages 277-298

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Authors: William R Carr

Published in Sida, Contributions To Botany, in 1992, in volume 15, issue 2, pages 347-348

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Authors: Robert R Talmadge

Published in Veliger, in 1966, in volume 9, pages 236-238

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Authors: William A Weber | R C Wittmann

Published in Phytologia, in 2009, in volume 91, issue 2, pages 92-94

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Authors: William R Maxon

Published in American Fern Journal, in 1915, in volume 5, pages 4-7

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Authors: R William Baxendale

Published in Palaeontology, in 1979, in volume 22, issue 3, pages 537-548

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Authors: Review By: Karen Holl

Published in Madroño, in 2004, in volume 51, issue 3, pages 336-337

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Authors: Review By: Wallace R Ernst

Published in Madroño, in 1969, in volume 20, issue 1, pages 29-30

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Authors: R D Wood | Mary B William

Published in Muelleria, in 1967, in volume 1, issue 3, pages 175-196

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Authors: William R Eckberg

Published in Biol Bull, in 1981, in volume 160, pages 228-239

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Authors: William E Hazen | Edward R Baylor

Published in Biol Bull, in 1962, in volume 123, pages 243-252

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Authors: R S Wilkinson

Published in Entomologist's Record and Journal of Variation, in 1966, in volume 78, pages 115-121

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Authors: William R Buck

Published in Moscosoa, in 1983, in volume 2, pages 54-60

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Authors: William R Burk

Published in Sida, Contributions To Botany, in 1996, in volume 17, issue 1, pages 243-249

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Authors: William R Maxon

Published in American Fern Journal, in 1913, in volume 3, pages 109-116

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Authors: William R Maxon

Published in American Fern Journal, in 1915, in volume 5, pages 50-52

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Authors: William R Maxon | C V Morton

Published in American Fern Journal, in 1946, in volume 36, issue 3, pages 91

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Authors: William R Burk

Published in Sida, Contributions To Botany, in 2002, in volume 20, issue 2, pages 861-864

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