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Published in Asa Gray correspondence. Senders Be-Bo, in 1844, pages 1-2

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Published in Asa Gray correspondence. Senders E, 1838-1898 (inclusive), in 1842, pages 1-2

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Published in The Auk, in 1891, in volume 8, pages 383-384

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Published in Botanical Gazette, in 1921, in volume 72, issue 4, pages 245-249

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Published in The Auk, in 1906, in volume 23, pages 271-274

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Published in Rhodora, in 1937, in volume 39, issue 461, pages 153-155

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Published in The Auk, in 1892, in volume 9, pages 238-247

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Published in The Auk, in 1893, in volume 10, pages 155-157

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Published in The Auk, in 1888, in volume 5, pages 264-266

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Published in Journal of The Arnold Arboretum, in 1967, in volume 48, issue 2, pages 105-121

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Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 3, pages 217-218

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Published in Victorian Naturalist, in 2006, in volume 123, issue 1, pages 4-28

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Published in Journal of The Arnold Arboretum, in 1968, in volume 49, issue 2, pages 225-232

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Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 3, pages 219-249

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Published in Biol Bull, in 1987, in volume 172, pages 1-9

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Published in Proceedings of The American Philosophical Society, in 1894, in volume 33, issue 145, pages 225-243

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Published in Acta Botánica Mexicana, in 2012, in volume 100, pages 293-315

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Published in Journal of The Arnold Arboretum, in 1964, in volume 45, issue 4, pages 464-470

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1913, in volume 65, pages 584-616

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Published in Palaeontology, in 1960, in volume 3, issue 2, pages 227-236

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Published in Journal of Arachnology, in 1999, in volume 27, issue 3, pages 165-170

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Published in Malacologia, in 2011, in volume 53, issue 2, pages 381-402

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1911, in volume 63, pages 336-373

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1914, in volume 66, pages 209-213

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Published in Acta Botánica Mexicana, in 2010, in volume 92, pages 29-49

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Published in The Wilson Bulletin, in 1992, in volume 104, issue 3, pages 501-515

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Published in Journal of Hymenoptera Research, in 2003, in volume 12, pages 136-147

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Published in Acta Botánica Mexicana, in 2000, in volume 52, pages 43-48

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Published in Madroño, in 1971, in volume 21, issue 4, pages 208-221

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Published in Alytes, in 1991, in volume 9, issue 3, pages 61-69

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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1892, in volume 44, pages 136-141

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Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 169-173

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Published in Avicennia, in 1994, in volume 1, pages 31-38

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Published in Acta Botánica Mexicana, in 2008, in volume 84, pages 17-23

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Published in Journal of The Arnold Arboretum, in 1972, in volume 53, issue 3, pages 312-335

Created: 2016-07-07, modified: 2016-07-07

Published in Acta Botánica Mexicana, in 2005, in volume 72, pages 33-38

Created: 2018-05-21, modified: 2018-05-21