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Published in Rhodora, in 1946, in volume 48, issue 573, pages 263-264
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Published in Journal of The Arnold Arboretum, in 1939, in volume 20, issue 1, pages 114-115
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Published in The Auk, in 1886, in volume 3, pages 60-73
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Published in Carnivorous plant newsletter, in 1973, in volume 2, issue 3, pages 35-37
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Published in The Auk, in 1914, in volume 31, pages 408
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Published in Biol Bull, in 1963, in volume 124, pages 262-267
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Published in Records of the Australian Museum, in 1899, in volume 3, pages 104-105
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Published in American Fern Journal, in 1925, in volume 15, pages 1-7
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Published in American Fern Journal, in 1928, in volume 18, pages 61-63
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Published in American Fern Journal, in 1966, in volume 56, pages 182-183
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