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Published in Rhodora, in 1955, in volume 57, pages 219-240
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Published in American Fern Journal, in 1950, in volume 40, pages 21-32
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Published in American Fern Journal, in 1966, in volume 56, pages 101-107
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Published in Rhodora, in 1966, in volume 68, pages 121-138
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Published in Rhodora, in 1958, in volume 60, issue 720, pages 309-316
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Published in American Fern Journal, in 1983, in volume 73, pages 1-5
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Published in Contributions from the University of Michigan Herbarium, in 1999, in volume 22, pages 135-187
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Published in Contributions From The University of Michigan Herbarium, in 1982, in volume 15, pages 315-324
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Published in American Fern Journal, in 1982, in volume 72, pages 97-102
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Published in Contributions from the University of Michigan Herbarium, in 1990, in volume 17, pages 313-325
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Published in Journal of The Lepidopterists' Society, in 1982, in volume 35, pages 247
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Published in Madroño, in 1962, in volume 16, issue 5, pages 158-161
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