Published in American Fern Journal, in 1966, in volume 56, pages 1-3

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Published in Sida, Contributions To Botany, in 2006, in volume 22, pages 243-264

Created: 2014-02-06, modified: 2014-02-06

Published in Veliger, in 1960, in volume 3, pages 13-16

Created: 2013-08-11, modified: 2013-08-11

Published in Sida, Contributions To Botany, in 2001, in volume 19, issue 4, pages 1156

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

Published in Sida, Contributions To Botany, in 2002, in volume 20, issue 1, pages 30

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Published in Asa Gray correspondence. Senders A, in 1849, pages 1-3

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Published in Palaeontology, in 1964, in volume 7, issue 2, pages 331-349

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1866, pages 1-3

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Published in Sida, Contributions To Botany, in 2005, in volume 21, issue 3, pages 1662

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Published in Palaeontology, in 1988, in volume 31, issue 4, pages 1079-1100

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Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), pages 1

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Published in Asa Gray correspondence. Senders Ca-Cl, in 1866, pages 1-2

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Published in American Fern Journal, in 1989, in volume 79, pages 125-126

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1842, pages 1

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Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), pages 1-2

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Published in Madroño, in 2017, in volume 64, issue 1, pages 6

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Published in Entomological News, in 1907, in volume 18, pages 399

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Published in American Fern Journal, in 1987, in volume 77, pages 100

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Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1884, pages 1-2

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Published in The Wilson Bulletin, in 1999, in volume 111, issue 3, pages 346-353

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Published in Pacific Science, in 1961, in volume 15, issue 4, pages 561-562

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Published in Veliger, in 1978, in volume 21, pages 171-188

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Published in American Fern Journal, in 1983, in volume 73, pages 33-38

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Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1-2

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Published in Asa Gray correspondence. Senders Ga-Go, 1835-1891 (inclusive), in 1876, pages 1

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Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1-2

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Published in Asa Gray correspondence. Senders Ga-Go, 1835-1891 (inclusive), in 1870, pages 1

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

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Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1-2

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Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1-2

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

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

Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1-3

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

Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1-3

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

Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1-3

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

Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), pages 1-2

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

Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), pages 1-2

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

Published in Asa Gray correspondence. Senders Br-Bz, pages 1-2

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

Published in Brigham Young Univ Sci Bull, in 1972, in volume 17, pages 1-115

Created: 2012-05-01, modified: 2013-03-15

Published in Veliger, in 1960, in volume 2, pages 94-95

Created: 2013-08-11, modified: 2013-08-11

Published in Rhodora, in 1991, in volume 93, issue 875, pages 238-241

Created: 2016-07-19, modified: 2016-07-19

Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1881, pages 1

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

Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1887, pages 1-2

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

Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1889, pages 1-2

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

Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1888, pages 1

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

Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1890, pages 1

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

Published in Asa Gray correspondence. Senders Gr-Gu, 1839-1890 (inclusive), pages 1

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

Published in Biol Bull, in 1969, in volume 137, pages 312-320

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

Published in Journal of The Botanical Research Institute of Texas, in 2008, in volume 2, issue 2, pages 770

Created: 2015-12-01, modified: 2015-12-01