Published in Proceedings of The American Philosophical Society, in 1873, in volume 13, issue 81, pages 138-140

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Published in Proceedings of The American Philosophical Society, in 1874, in volume 14, issue 92, pages 150-153

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Published in Rhodora, in 1903, in volume 5, issue 53, pages 121-123

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Published in Phytologia, in 1976, in volume 32, pages 480-482

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Published in Proceedings of The American Philosophical Society, in 1875, in volume 14, issue 94, pages 358-361

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Published in Phytologia, in 1979, in volume 44, pages 377-380

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Published in Journal of The Arnold Arboretum, in 1964, in volume 45, issue 1, pages 158-159

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Published in Annals of the Missouri Botanical Garden, in 1996, in volume 83, pages 574-580

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Published in Novon, in 1994, in volume 4, pages 9-15

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Published in Journal of the Arnold Arboretum, in 1965, in volume 46, pages 232-241

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Published in Journal of The Arnold Arboretum, in 1962, in volume 43, issue 3, pages 344-347

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Published in Phytologia, in 1979, in volume 44, pages 307-312

Created: 2011-01-26, modified: 2011-06-21

Published in Journal of the Arnold Arboretum, in 1963, in volume 44, pages 143-164

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Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 3, pages 262-265

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Published in The Coleopterists Bulletin, in 1965, in volume 19, issue 1, pages 20

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Published in Journal of the Arnold Arboretum, in 1961, in volume 42, pages 295-320

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Published in Annals of the Missouri Botanical Garden, in 1959, in volume 46, pages 257-358

Created: 2010-01-08, modified: 2015-12-16

Published in Rhodora, in 1962, in volume 64, issue 759, pages 277-283

Created: 2016-07-19, modified: 2023-02-16

Published in Journal of the Arnold Arboretum, in 1961, in volume 42, pages 373-396

Created: 2011-01-26, modified: 2023-02-16

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

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Published in Phytologia, in 1986, in volume 61, pages 361-366

Created: 2011-01-26, modified: 2023-02-16

Published in Annals of the Missouri Botanical Garden, in 1988, in volume 75, pages 728-729

Created: 2010-01-08, modified: 2015-12-16

Published in Biol Bull, in 1977, in volume 153, pages 219-227

Created: 2010-01-06, modified: 2011-06-21

Published in The Great Basin Naturalist, in 1986, in volume 46, issue 3, pages 398-403

Created: 2017-11-16, modified: 2023-02-16

Published in The Coleopterists Bulletin, in 1966, in volume 20, issue 2, pages 64

Created: 2023-12-24, modified: 2025-12-17

Published in The Great Basin Naturalist, in 1985, in volume 45, issue 2, pages 237-254

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Published in Journal of The Arnold Arboretum, in 1970, in volume 51, issue 2, pages 221-227

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Published in Journal of The Arnold Arboretum, in 1969, in volume 50, issue 1, pages 99-103

Created: 2016-07-07, modified: 2025-12-17