Published in Journal of The Arnold Arboretum, in 1979, in volume 60, issue 2, pages 167-218
Created: 2016-07-07, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/11016381,60,60)
Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 3, pages 369-403
Created: 2016-07-07, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/16166196,60,60)
Published in Annals of the Missouri Botanical Garden, in 1983, in volume 70, pages 658-666
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/15934382,60,60)
Published in The Auk, in 1901, in volume 18, pages 277
Created: 2013-03-08, modified: 2013-03-08![](https://www.biodiversitylibrary.org/pagethumb/49628551,60,60)
Published in Palaeontology, in 1965, in volume 8, issue 1, pages 113-131
Created: 2016-04-23, modified: 2016-04-23![](https://www.biodiversitylibrary.org/pagethumb/49626420,60,60)
Published in Palaeontology, in 1962, in volume 5, issue 3, pages 540-549
Created: 2016-04-23, modified: 2016-04-23![](https://www.biodiversitylibrary.org/pagethumb/49630998,60,60)
Published in Palaeontology, in 1963, in volume 6, issue 1, pages 166-171
Created: 2016-04-23, modified: 2016-04-23![](https://www.biodiversitylibrary.org/pagethumb/2308270,60,60)
Published in Proceedings of The Biological Society of Washington, in 1900, in volume 13, pages 154-155
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/609601,60,60)
Published in Rhodora, in 1943, in volume 45, issue 534, pages 217-220
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/10256288,60,60)
Published in Proceedings of The Biological Society of Washington, in 1893, in volume 8, pages 1-8
Created: 2011-07-31, modified: 2021-04-05![](https://www.biodiversitylibrary.org/pagethumb/32864126,60,60)
Published in Rhodora, in 2002, in volume 104, pages 77-82
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/5873293,60,60)
Published in Rhodora, in 1983, in volume 85, pages 421-432
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/615379,60,60)
Published in Rhodora, in 1944, in volume 46, issue 546, pages 204-205
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/33355051,60,60)
Published in Rhodora, in 1992, in volume 94, issue 880, pages 395
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/33355052,60,60)
Published in Rhodora, in 1992, in volume 94, issue 880, pages 396
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/29827638,60,60)
Published in Botanical Gazette, in 1898, in volume 26, issue 4, pages 270-274
Created: 2017-03-14, modified: 2017-03-14![](https://www.biodiversitylibrary.org/pagethumb/35297657,60,60)
Published in Botanical Gazette, in 1922, in volume 73, issue 6, pages 505-506
Created: 2017-03-14, modified: 2017-03-14![](https://www.biodiversitylibrary.org/pagethumb/32128441,60,60)
Published in Torreya, in 1938, in volume 38, issue 4, pages 81-98
Created: 2022-12-14, modified: 2022-12-14![](https://www.biodiversitylibrary.org/pagethumb/7103681,60,60)
Published in Proceedings of The American Philosophical Society, in 1898, in volume 37, issue 158, pages 312-319
Created: 2017-01-01, modified: 2017-01-01![](https://www.biodiversitylibrary.org/pagethumb/15982852,60,60)
Published in The Auk, in 1916, in volume 33, pages 376-383
Created: 2013-03-08, modified: 2013-03-08![](https://www.biodiversitylibrary.org/pagethumb/601465,60,60)
Published in Rhodora, in 1931, in volume 33, issue 387, pages 79
Created: 2016-07-19, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/603284,60,60)
Published in Rhodora, in 1933, in volume 35, issue 415, pages 262
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/10256450,60,60)
Published in Proceedings of The Biological Society of Washington, in 1893, in volume 8, pages 113-116
Created: 2011-07-31, modified: 2021-04-05![](https://www.biodiversitylibrary.org/pagethumb/2328727,60,60)
Published in Proceedings of The Biological Society of Washington, in 1896, in volume 10, pages 109-112
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2338939,60,60)
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 97-98
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2348087,60,60)
Published in Proceedings of The Biological Society of Washington, in 1906, in volume 19, pages 61-65
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/3779378,60,60)
Published in Proceedings of The Biological Society of Washington, in 1911, in volume 24, pages 53-55
Created: 2011-07-31, modified: 2021-04-05![](https://www.biodiversitylibrary.org/pagethumb/45940360,60,60)
Published in American Malacological Bulletin, in 1987, in volume 5, issue 2, pages 197-214
Created: 2014-09-21, modified: 2014-09-21![](https://www.biodiversitylibrary.org/pagethumb/2096533,60,60)
Published in J. Bombay Nat. Hist. Soc, in 1904, in volume 15, pages 729-730
Created: 2023-10-08, modified: 2023-10-08![](https://www.biodiversitylibrary.org/pagethumb/25209476,60,60)
Published in Proceedings of The Entomological Society of Washington, in 1979, in volume 81, pages 621-629
Created: 2011-06-10, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/16076054,60,60)
Published in The Auk, in 1903, in volume 20, pages 319
Created: 2013-03-08, modified: 2013-03-08![](https://www.biodiversitylibrary.org/pagethumb/15912776,60,60)
Published in The Auk, in 1917, in volume 34, pages 205-206
Created: 2013-03-08, modified: 2013-03-08![](https://www.biodiversitylibrary.org/pagethumb/567147,60,60)
Published in Rhodora, in 1912, in volume 14, issue 164, pages 176
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/601576,60,60)
Published in Rhodora, in 1931, in volume 33, issue 392, pages 171-172
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/604565,60,60)
Published in Rhodora, in 1935, in volume 37, issue 444, pages 455
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/601607,60,60)
Published in Rhodora, in 1931, in volume 33, issue 393, pages 198-199
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/9253052,60,60)
Published in Journal of the Arnold Arboretum, in 1982, in volume 63, pages 411-427
Created: 2011-01-26, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/2348065,60,60)
Published in Proceedings of the Biological Society of Washington, in 1906, in volume 19, pages 83-85
Created: 2010-11-20, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/2308086,60,60)
Published in Proceedings of The Biological Society of Washington, in 1900, in volume 13, pages 57-59
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2339035,60,60)
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 33-34
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2339027,60,60)
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 41-45
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2338941,60,60)
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 95-96
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2364937,60,60)
Published in Proceedings of The Biological Society of Washington, in 1902, in volume 15, pages 51-52
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2365068,60,60)
Published in Proceedings of The Biological Society of Washington, in 1902, in volume 15, pages 173-175
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/2345414,60,60)
Published in Proceedings of The Biological Society of Washington, in 1903, in volume 16, pages 145-146
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/3779324,60,60)
Published in Proceedings of The Biological Society of Washington, in 1911, in volume 24, pages 3-6
Created: 2011-07-31, modified: 2021-04-05![](https://www.biodiversitylibrary.org/pagethumb/3779584,60,60)
Published in Proceedings of The Biological Society of Washington, in 1911, in volume 24, pages 241-242
Created: 2011-07-31, modified: 2021-04-05![](https://www.biodiversitylibrary.org/pagethumb/3337843,60,60)
Published in Proceedings of The Biological Society of Washington, in 1913, in volume 26, pages 113-114
Created: 2011-07-31, modified: 2011-07-31![](https://www.biodiversitylibrary.org/pagethumb/55445142,60,60)
Published in Proceedings of The Biological Society of Washington, in 1914, in volume 27, pages 211-212
Created: 2011-07-31, modified: 2022-09-19![](https://www.biodiversitylibrary.org/pagethumb/34552437,60,60)
Published in Proceedings of The Biological Society of Washington, in 1936, in volume 49, pages 145-146
Created: 2011-07-31, modified: 2011-07-31