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Published in Transactions of The Royal Entomological Society of London, in 1918, in volume 66, pages 117

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Published in The Auk, in 1917, in volume 34, pages 226

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Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1891, pages 1-2

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Published in Asa Gray correspondence. Senders J, 1844-1891 (inclusive), in 1891, pages 1

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Published in Sida, Contributions To Botany, in 1990, in volume 14, issue 1, pages 134-135

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