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Published in Proceedings of The Biological Society of Washington, in 1932, in volume 45, pages 139-140
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 55-61
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Published in Proceedings of the Biological Society of Washington, in 1935, in volume 48, pages 143-146
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Published in Botanical Gazette, in 1922, in volume 73, issue 5, pages 401-411
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1873, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1873, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1863, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1864, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1862, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1871, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1871, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1873, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1862, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1863, pages 1-2
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Published in Asa Gray correspondence. Senders Ha, 1835-1895 (inclusive), in 1873, pages 1-2
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Published in Proceedings of the California Academy of Sciences, in 1944, in volume 23, pages 555-560
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 67-68
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