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Published in American Fern Journal, in 2005, in volume 95, pages 94-114
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Published in The Wilson Bulletin, in 1944, in volume 56, issue 3, pages 178-180
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Published in American Fern Journal, in 2003, in volume 93, pages 164-165
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Published in The Wilson Bulletin, in 1943, in volume 55, issue 1, pages 50
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Published in Rhodora, in 1980, in volume 82, pages 599-607
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Published in The Wilson Bulletin, in 1943, in volume 55, issue 4, pages 249-250
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Published in The Wilson Bulletin, in 1942, in volume 54, issue 4, pages 237
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Published in The Wilson Bulletin, in 1955, in volume 67, issue 2, pages 144-145
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Published in Annals of the Missouri Botanical Garden, in 1975, in volume 62, pages 538-589
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Published in Rhodora, in 1997, in volume 99, issue 900, pages 380-381
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Published in American Fern Journal, in 2001, in volume 91, pages 41-69
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Published in The Wilson Bulletin, in 1961, in volume 73, issue 4, pages 398-424
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Published in Annals of the Missouri Botanical Garden, in 1992, in volume 79, pages 613-622
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Published in The Auk, in 1910, in volume 27, pages 474-476
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Published in Psyche: A Journal of Entomology, in 1959, in volume 66, issue 4, pages 55-59
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Published in The Wilson Bulletin, in 1962, in volume 74, issue 2, pages 205-224
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Published in Asa Gray correspondence. Senders Br-Bz, in 1848, pages 1-6
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Published in Torreya, in 1906, in volume 6, issue 11, pages 233-237
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Published in Zoologica, in 1965, in volume 50, issue 3, pages 45-46
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Published in Asa Gray correspondence. Senders K, 1842-1891 (inclusive), in 1876, pages 1-2
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Published in Annals of the Missouri Botanical Garden, in 1991, in volume 78, pages 105-130
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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1871, pages 1-2
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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1836, pages 1-3
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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1864, pages 1-2
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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1865, pages 1-2
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Published in Asa Gray correspondence. Senders La-Le, 1833-1897 (inclusive), in 1865, pages 1-2
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Published in Rhodora, in 1940, in volume 42, issue 497, pages 197-198
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Published in Torreya, in 1906, in volume 6, issue 9, pages 186-189
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Published in Zoologica, in 1966, in volume 51, issue 6, pages 71-76
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Published in Asa Gray correspondence. Senders A, pages 1
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Published in William Marriot Canby letters to Asa Gray, 1861-1895, in 1881, pages 1-2
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Published in Nautilis, in 1927, in volume 41, pages 1-6
Created: 2013-09-28, modified: 2013-09-28
Published in Nautilis, in 1931, in volume 45, pages 37-41
Created: 2013-09-28, modified: 2013-09-28