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Published in Rhodora, in 1983, in volume 85, issue 841, pages 45-54

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Published in The Auk, in 1914, in volume 31, pages 412

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Published in American Fern Journal, in 1982, in volume 72, pages 62

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Published in Journal of The Arnold Arboretum, in 1981, in volume 62, issue 2, pages 129-209

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Published in Madroño, in 1989, in volume 36, issue 3, pages 174

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Published in Journal of The Arnold Arboretum, in 1979, in volume 60, issue 4, pages 477-503

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Published in Journal of The Arnold Arboretum, in 1986, in volume 67, issue 4, pages 441-469

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Published in Journal of The Arnold Arboretum, in 1982, in volume 63, issue 2, pages 103-144

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Published in Bulletin of The African Bird Club, in 2005, in volume 12, issue 1, pages 40-41

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Published in Sida, Contributions To Botany, in 1986, in volume 11, issue 3, pages 329-333

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Published in Sida, Contributions To Botany, in 1990, in volume 14, issue 2, pages 263-266

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Published in Novitates Zoologicae,, in 1904, in volume 11, issue 1, pages 310-322

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Published in American Fern Journal, in 1980, in volume 70, pages 45-46

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Published in Journal and Proceedings of the Royal Society of Western Australia, in 1915, in volume 1, pages 45-54

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Published in Madroño, in 1957, in volume 14, issue 1, pages 30-36

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Published in American Fern Journal, in 1982, in volume 72, pages 65-75

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Published in Sida, Contributions To Botany, in 1994, in volume 16, issue 2, pages 225-231

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Published in The Auk, in 1916, in volume 33, pages 434

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Published in The Auk, in 1913, in volume 30, pages 578-579

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Published in The Flowering Plants of South Africa, in 1938, in volume 18, pages 1

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Published in Rhodora, in 1899, in volume 1, issue 10, pages 193

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Published in Entomological News, in 1992, in volume 103, pages 72-77

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Published in Asa Gray correspondence. Senders Br-Bz, in 1884, pages 1-2

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Published in Entomologist's Record and Journal of Variation, in 1996, in volume 108, issue 11-12, pages 329-335

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Published in The Auk, in 1911, in volume 28, pages 179-188

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Published in The Auk, in 1914, in volume 31, pages 257-258

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Published in The Auk, in 1916, in volume 33, pages 77

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Published in Bothalia, in 1922, in volume 1, pages 105-109

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