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Published in Journal of The Washington Academy of Sciences, in 1911, in volume 1, pages 280-282

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Published in Palaeontology, in 1968, in volume 11, issue 1, pages 141-162

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Published in Proceedings of The Entomological Society of Washington, in 1981, in volume 83, pages 300-303

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Published in Torreya, in 1906, in volume 6, issue 9, pages 189-195

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Published in Rhodora, in 1931, in volume 33, issue 393, pages 193-198

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Published in Phytologia, in 1972, in volume 23, issue 5, pages 455-459

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Published in Rhodora, in 1921, in volume 23, issue 271, pages 177-179

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Published in Rhodora, in 1918, in volume 20, issue 232, pages 63-64

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