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Published in The Great Basin Naturalist, in 1983, in volume 43, pages 88-92

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Published in American Fern Journal, in 1976, in volume 66, pages 60-62

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Published in Proceedings of the California Academy of Sciences, in 1984, in volume 43, pages 221-238

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Published in Biol Bull, in 1956, in volume 111, pages 235-239

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Published in Madroño, in 1981, in volume 28, issue 1, pages 44

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Published in Madroño, in 1994, in volume 41, issue 3, pages 226-228

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Published in Madroño, in 1996, in volume 43, issue 2, pages 334-338

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