Published in American Fern Journal, in 1968, in volume 58, pages 180
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Published in American Fern Journal, in 1968, in volume 58, pages 155-158
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Published in American Fern Journal, in 1991, in volume 81, pages 24-36
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Published in Proceedings of The Biological Society of Washington, in 1985, in volume 98, pages 916-930
Created: 2011-06-10, modified: 2011-06-21
Published in American Fern Journal, in 1987, in volume 77, pages 90-94
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Published in American Fern Journal, in 1997, in volume 87, pages 66-70
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Published in American Fern Journal, in 2000, in volume 90, pages 100-103
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Published in American Fern Journal, in 2002, in volume 92, pages 50
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Published in American Fern Journal, in 1972, in volume 62, pages 49-56
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Published in American Fern Journal, in 1972, in volume 62, pages 101-120
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Published in American Fern Journal, in 1983, in volume 73, pages 121
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Published in American Fern Journal, in 1983, in volume 73, pages 96
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Published in Proceedings of The Biological Society of Washington, in 1985, in volume 98, pages 366-390
Created: 2011-06-10, modified: 2011-06-21
Published in American Fern Journal, in 1966, in volume 56, pages 180-182
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Published in American Fern Journal, in 1980, in volume 70, pages 30
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Published in American Fern Journal, in 1980, in volume 70, pages 96-98
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Published in Proceedings of The Biological Society of Washington, in 1977, in volume 89, pages 703-732
Created: 2011-06-10, modified: 2011-06-21
Published in American Fern Journal, in 1974, in volume 64, pages 64
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Published in American Fern Journal, in 1982, in volume 72, pages 44
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Published in American Fern Journal, in 1982, in volume 72, pages 84
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Published in American Fern Journal, in 1991, in volume 81, pages 99-102
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Published in American Fern Journal, in 2002, in volume 92, pages 93
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Published in American Fern Journal, in 1982, in volume 72, pages 40
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Published in American Fern Journal, in 1982, in volume 72, pages 52
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Published in American Fern Journal, in 1997, in volume 87, pages 153
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Published in American Fern Journal, in 1972, in volume 62, pages 1-8
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Published in American Fern Journal, in 1978, in volume 68, pages 120
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Published in American Fern Journal, in 1980, in volume 70, pages 98
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Published in American Fern Journal, in 2001, in volume 91, pages 1-8
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Published in American Fern Journal, in 1974, in volume 64, pages 77-80
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Published in American Fern Journal, in 1982, in volume 72, pages 14
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Published in American Fern Journal, in 1985, in volume 75, pages 31
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Published in American Fern Journal, in 1987, in volume 77, pages 101-102
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Published in American Fern Journal, in 1989, in volume 79, pages 135
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Published in American Fern Journal, in 1993, in volume 83, pages 37-38
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Published in American Fern Journal, in 1997, in volume 87, pages 30-31
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Published in American Fern Journal, in 2002, in volume 92, pages 23-29
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Published in American Fern Journal, in 1970, in volume 60, pages 38-39
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Published in American Fern Journal, in 1991, in volume 81, pages 141
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Published in Compositae Newsletter, in 1997, in volume 31, pages 24-26
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Published in American Fern Journal, in 1983, in volume 73, pages 93
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Published in American Fern Journal, in 2003, in volume 93, pages 146-151
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Published in American Fern Journal, in 1968, in volume 58, pages 142-143
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Published in American Fern Journal, in 1983, in volume 73, pages 45
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Published in American Fern Journal, in 1983, in volume 73, pages 52
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Published in American Fern Journal, in 1995, in volume 85, pages 98-99
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Published in American Fern Journal, in 1980, in volume 70, pages 38
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Published in Torreya, in 1912, in volume 12, issue 8, pages 190-197
Created: 2022-12-14, modified: 2022-12-14
Published in Phytologia, in 2022, in volume 104, issue 2, pages 8-9
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Published in Palaeontology, in 1993, in volume 36, issue 2, pages 361-385
Created: 2016-04-23, modified: 2016-04-23