Published in Novon, in 1992, in volume 2, pages 269-273
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/9255834,60,60)
Published in Journal of the Arnold Arboretum, in 1979, in volume 60, pages 403-444
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/6716203,60,60)
Published in Rhodora, in 1984, in volume 86, issue 846, pages 121-125
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/642868,60,60)
Published in Novon, in 2002, in volume 12, pages 290-298
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/5439865,60,60)
Published in Rhodora, in 1978, in volume 80, issue 824, pages 570-574
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/642748,60,60)
Published in Novon, in 2002, in volume 12, pages 170-172
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/28140738,60,60)
Published in Taxon, in 1975, in volume 24, pages 593-601
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/47863822,60,60)
Published in Madroño, in 1970, in volume 20, issue 5, pages 257-263
Created: 2016-02-15, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/8436572,60,60)
Published in Journal of the Arnold Arboretum, in 1956, in volume 37, pages 217-268
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/8445463,60,60)
Published in Journal of the Arnold Arboretum, in 1958, in volume 39, pages 49-100
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/8445525,60,60)
Published in Journal of the Arnold Arboretum, in 1958, in volume 39, pages 111-212
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/8438985,60,60)
Published in Journal of the Arnold Arboretum, in 1957, in volume 38, pages 51-80
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/8439104,60,60)
Published in Journal of the Arnold Arboretum, in 1957, in volume 38, pages 170-198
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/8439229,60,60)
Published in Journal of the Arnold Arboretum, in 1957, in volume 38, pages 295-373
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/54262084,60,60)
Published in Pacific Science, in 1951, in volume 5, issue 1, pages 52-77
Created: 2017-09-10, modified: 2017-09-10![](https://www.biodiversitylibrary.org/pagethumb/560399,60,60)
Published in Rhodora, in 1900, in volume 2, issue 17, pages 106
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/628236,60,60)
Published in Rhodora, in 1963, in volume 65, issue 763, pages 193-207
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/47941749,60,60)
Published in Madroño, in 1977, in volume 24, issue 2, pages 65-68
Created: 2016-02-15, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/47943942,60,60)
Published in Madroño, in 1988, in volume 35, issue 2, pages 117-120
Created: 2016-02-15, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/1545640,60,60)
Published in Biol Bull, in 1991, in volume 180, pages 65-71
Created: 2010-01-07, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/40477179,60,60)
Published in Memoirs of The Queensland Museum, in 1992, in volume 32, pages 311-373
Created: 2012-10-29, modified: 2012-10-29![](https://www.biodiversitylibrary.org/pagethumb/16270565,60,60)
Published in Annals of the Entomological Society of America, in 1911, in volume 4, issue 2, pages 181-186
Created: 2016-08-22, modified: 2016-08-22![](https://www.biodiversitylibrary.org/pagethumb/47942031,60,60)
Published in Madroño, in 1978, in volume 25, issue 1, pages 30-39
Created: 2016-02-15, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/49727203,60,60)
Published in Palaeontology, in 1971, in volume 14, issue 2, pages 262-265
Created: 2016-04-23, modified: 2016-04-23![](https://www.biodiversitylibrary.org/pagethumb/49766234,60,60)
Published in Palaeontology, in 1976, in volume 19, issue 4, pages 681-688
Created: 2016-04-23, modified: 2016-04-23![](https://www.biodiversitylibrary.org/pagethumb/560422,60,60)
Published in Rhodora, in 1900, in volume 2, issue 18, pages 127-130
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/560541,60,60)
Published in Rhodora, in 1900, in volume 2, issue 24, pages 243-246
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/27278512,60,60)
Published in Annals of the Missouri Botanical Garden, in 1987, in volume 74, pages 117-120
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/27277794,60,60)
Published in Annals of the Missouri Botanical Garden, in 1988, in volume 75, pages 1087-1144
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/632869,60,60)
Published in Rhodora, in 1967, in volume 69, issue 779, pages 241-305
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/10007449,60,60)
Published in Sida, Contributions To Botany, in 1966, in volume 2, issue 5, pages 377-380
Created: 2015-12-02, modified: 2015-12-02![](https://www.biodiversitylibrary.org/pagethumb/9301001,60,60)
Published in Sida, Contributions To Botany, in 1990, in volume 14, issue 2, pages 145-167
Created: 2015-12-02, modified: 2015-12-02![](https://www.biodiversitylibrary.org/pagethumb/29150203,60,60)
Published in Journal of The Arnold Arboretum, in 1967, in volume 48, issue 4, pages 363-430
Created: 2016-07-07, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/12224604,60,60)
Published in Bull. Zool. Nom., in 1971, in volume 28, pages 75
Created: 2009-12-23, modified: 2023-05-10![](https://www.biodiversitylibrary.org/pagethumb/7725438,60,60)
Published in Bulletin of the United States National Museum, in 1884, in volume 25, pages 307-327
Created: 2010-02-13, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/1530701,60,60)
Published in Biol Bull, in 1998, in volume 195, pages 282-289
Created: 2010-01-07, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/26882306,60,60)
Published in Proceedings of The American Philosophical Society, in 1919, in volume 58, issue 220, pages 382-385
Created: 2017-01-01, modified: 2017-01-01![](https://www.biodiversitylibrary.org/pagethumb/564001,60,60)
Published in Rhodora, in 1899, in volume 1, issue 2, pages 30-33
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/564056,60,60)
Published in Rhodora, in 1899, in volume 1, issue 5, pages 83-84
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/564082,60,60)
Published in Rhodora, in 1899, in volume 1, issue 6, pages 108-110
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/561697,60,60)
Published in Rhodora, in 1902, in volume 4, issue 37, pages 5-7
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/562169,60,60)
Published in Rhodora, in 1903, in volume 5, issue 56, pages 197-199
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/567506,60,60)
Published in Rhodora, in 1915, in volume 17, issue 193, pages 30-32
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/28001633,60,60)
Published in Annals of the Missouri Botanical Garden, in 1991, in volume 78, pages 255-258
Created: 2010-01-08, modified: 2015-12-17![](https://www.biodiversitylibrary.org/pagethumb/28140165,60,60)
Published in Annals of the Missouri Botanical Garden, in 1994, in volume 81, pages 33-144
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/561769,60,60)
Published in Rhodora, in 1902, in volume 4, issue 40, pages 77-79
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/9254896,60,60)
Published in Journal of the Arnold Arboretum, in 1984, in volume 65, pages 105-127
Created: 2011-01-26, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/609003,60,60)
Published in Rhodora, in 1942, in volume 44, pages 409-414
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/10010325,60,60)
Published in Sida, Contributions To Botany, in 1979, in volume 8, issue 1, pages 71-89
Created: 2015-12-02, modified: 2015-12-02![](https://www.biodiversitylibrary.org/pagethumb/9177680,60,60)
Published in Journal of The Arnold Arboretum, in 1960, in volume 41, issue 3, pages 279-286
Created: 2016-07-07, modified: 2016-07-07