Published in American Fern Journal, in 1978, in volume 68, pages 76-94

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Published in American Fern Journal, in 1989, in volume 79, pages 14-25

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Published in American Fern Journal, in 1989, in volume 79, pages 103-118

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Published in American Fern Journal, in 1991, in volume 81, pages 76-88

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Published in Rodriguésia, in 1952, in volume 15, issue 27, pages 137-162

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Published in Torreya, in 1940, in volume 40, issue 1, pages 5-9

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Published in Torreya, in 1934, in volume 34, issue 4, pages 92-93

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Published in Madroño, in 1941, in volume 6, issue 1, pages 21-22

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Published in Rhodora, in 1940, in volume 42, issue 501, pages 344-351

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Published in Torreya, in 1932, in volume 32, issue 3, pages 65-71

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Published in The Wilson Bulletin, in 1930, in volume 42, issue 3, pages 213

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Published in The Auk, in 1903, in volume 20, pages 313-314

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Published in Asa Gray correspondence. Senders Be-Bo, in 1872, pages 1-2

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Published in Torreya, in 1936, in volume 36, issue 1, pages 7-13

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Published in Torreya, in 1937, in volume 37, issue 6, pages 130-137

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Published in Annals of the Missouri Botanical Garden, in 1938, in volume 25, pages 1-94

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

Published in Proceedings of The Biological Society of Washington, in 1933, in volume 46, pages 201-205

Created: 2011-07-31, modified: 2011-07-31

Published in The Great Basin Naturalist, in 1964, in volume 24, pages 103-106

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Published in Rhodora, in 1957, in volume 59, issue 700, pages 95

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Published in Rhodora, in 1917, in volume 19, issue 220, pages 74-75

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Published in Torreya, in 1911, in volume 11, issue 1, pages 14-15

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Published in Bulletin of The African Bird Club, in 2001, in volume 8, issue 1, pages 48-49

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Published in Proceedings of The Royal Society of Victoria, in 1972, in volume 85, issue 1, pages 70-71

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Published in Rhodora, in 1930, in volume 32, issue 375, pages 59-62

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Published in Veliger, in 1960, in volume 3, pages 37-40

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Published in Rhodora, in 1912, in volume 14, issue 163, pages 164

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Published in Rhodora, in 1934, in volume 36, issue 421, pages 7-8

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Published in American Fern Journal, in 2008, in volume 98, pages 176-177

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Published in Botanical Gazette, in 1920, in volume 70, issue 5, pages 329-359

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Published in The Wilson Bulletin, in 1918, in volume 30, issue 1, pages 15-16

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Published in The Wilson Bulletin, in 1924, in volume 36, issue 4, pages 185-188

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Published in Madroño, in 1945, in volume 8, issue 2, pages 39-42

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Published in The Auk, in 1901, in volume 18, pages 192-193

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Published in Forktail, in 1999, in volume 15, pages 87-91

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Published in The Auk, in 1895, in volume 12, pages 293-295

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Published in Bulletin Bernice P. Bishop Museum, in 1935, in volume 114, pages 39-70

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Published in Entomologist's Record and Journal of Variation, in 1980, in volume 92, issue 4-5, pages 127-128

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Published in Madroño, in 2011, in volume 58, issue 2, pages 113-122

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Published in Rhodora, in 1931, in volume 33, issue 386, pages 63

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Published in Botanical Gazette, in 1913, in volume 56, issue 6, pages 490-495

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Published in Botanical Gazette, in 1915, in volume 59, issue 4, pages 301-316

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Published in Botanical Gazette, in 1916, in volume 61, issue 6, pages 495-506

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Published in Botanical Gazette, in 1917, in volume 64, issue 1, pages 21-41

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

Published in Botanical Gazette, in 1920, in volume 70, issue 2, pages 89-109

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

Published in Memoirs of the Carnegie Museum, in 1905, in volume 2, issue 5, pages 203-224

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Published in The Wilson Bulletin, in 1934, in volume 46, issue 3, pages 137-142

Created: 2016-12-04, modified: 2016-12-04

Published in The Auk, in 1910, in volume 27, pages 59-63

Created: 2013-03-07, modified: 2013-03-08

Published in The Auk, in 1912, in volume 29, pages 179-190

Created: 2013-03-07, modified: 2013-03-08

Published in The Auk, in 1900, in volume 17, pages 113-120

Created: 2013-03-08, modified: 2013-03-08

Published in The Auk, in 1895, in volume 12, pages 295-297

Created: 2013-03-08, modified: 2013-03-08