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Published in American Fern Journal, in 1913, in volume 3, pages 83-85

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Published in Madroño, in 1941, in volume 6, issue 4, pages 122-127

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Published in Madroño, in 1943, in volume 7, issue 1, pages 1-4

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Published in The Auk, in 1920, in volume 37, pages 476

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Published in Madroño, in 1991, in volume 38, issue 2, pages 130-138

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Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 173-203

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Published in The Auk, in 1906, in volume 23, pages 474-475

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Published in Quart J Fla Acad Scl, in 1966, in volume 29, pages 81-95

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