Published in Biol Bull, in 1948, in volume 94, pages 176-183
Created: 2010-01-06, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/1544999,60,60)
Published in Biol Bull, in 1966, in volume 131, pages 76-82
Created: 2010-01-06, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/8809926,60,60)
Published in Smithsonian Collections, in 1903, in volume 45, pages 1-73
Created: 2012-05-24, modified: 2012-05-24![](https://www.biodiversitylibrary.org/pagethumb/13785328,60,60)
Published in Phytologia, in 1974, in volume 29, pages 152-153
Created: 2011-01-26, modified: 2023-02-16![](https://www.biodiversitylibrary.org/pagethumb/2339029,60,60)
Published in Proc Biol Soc Washington, in 1901, in volume 14, pages 39-40
Created: 2010-05-11, modified: 2011-10-03![](https://www.biodiversitylibrary.org/pagethumb/29836424,60,60)
Published in Smithsonian miscellaneous collections, in 1918, in volume 68, issue 9, pages 1-12
Created: 2012-03-16, modified: 2017-05-15![](https://www.biodiversitylibrary.org/pagethumb/47828435,60,60)
Published in Madroño, in 1976, in volume 23, issue 5, pages 274-283
Created: 2016-02-15, modified: 2016-07-07![](https://www.biodiversitylibrary.org/pagethumb/27282367,60,60)
Published in Annals of the Missouri Botanical Garden, in 1981, in volume 68, pages 222-224
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/637112,60,60)
Published in Novon, in 1992, in volume 2, pages 319-321
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/30148556,60,60)
Published in Smithsonian Institution Miscellaneous Collection, in 1915, in volume 65, issue 12, pages 1-31
Created: 2013-09-27, modified: 2013-09-27![](https://www.biodiversitylibrary.org/pagethumb/12522707,60,60)
Published in Bulletin United States National Museum, in 1907, in volume 57, pages 1-282
Created: 2010-01-06, modified: 2011-10-03![](https://www.biodiversitylibrary.org/pagethumb/661876,60,60)
Published in Novon, in 1996, in volume 6, pages 150-156
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/636873,60,60)
Published in Novon, in 1992, in volume 2, pages 81-110
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/24295903,60,60)
Published in Annals And Magazine of Natural History, in 1908, in volume 1, pages 194-206
Created: 2011-09-22, modified: 2011-09-22![](https://www.biodiversitylibrary.org/pagethumb/22071788,60,60)
Published in Annals And Magazine of Natural History, in 1909, in volume 3, pages 415-422
Created: 2011-09-22, modified: 2011-09-22![](https://www.biodiversitylibrary.org/pagethumb/24254294,60,60)
Published in Annals And Magazine of Natural History, in 1907, in volume 20, pages 426-430
Created: 2011-09-23, modified: 2011-09-23![](https://www.biodiversitylibrary.org/pagethumb/15786925,60,60)
Published in Proceedings of The United States National Museum, in 1906, in volume 30, pages 737-758
Created: 2011-06-30, modified: 2017-01-06![](https://www.biodiversitylibrary.org/pagethumb/3337534,60,60)
Published in Proc. biol. Soc. Washington, in 1912, in volume 25, pages 117
Created: 2013-03-11, modified: 2013-03-11![](https://www.biodiversitylibrary.org/pagethumb/639151,60,60)
Published in Novon, in 1993, in volume 3, pages 244
Created: 2014-06-14, modified: 2014-06-14![](https://www.biodiversitylibrary.org/pagethumb/19266366,60,60)
Published in Annals And Magazine of Natural History, in 1900, in volume 6, pages 570-574
Created: 2011-09-23, modified: 2011-09-23![](https://www.biodiversitylibrary.org/pagethumb/55445156,60,60)
Published in Proceedings of The Biological Society of Washington, in 1914, in volume 27, pages 225-226
Created: 2011-07-31, modified: 2022-09-19![](https://www.biodiversitylibrary.org/pagethumb/7616040,60,60)
Published in Proceedings of The United States National Museum, in 1910, in volume 38, pages 385-386
Created: 2011-06-30, modified: 2017-01-06![](https://www.biodiversitylibrary.org/pagethumb/636985,60,60)
Published in Novon, in 1992, in volume 2, pages 193-197
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/24295767,60,60)
Published in Annals And Magazine of Natural History, in 1908, in volume 1, pages 68-70
Created: 2011-09-22, modified: 2011-09-22![](https://www.biodiversitylibrary.org/pagethumb/15629229,60,60)
Published in Annals And Magazine of Natural History, in 1910, in volume 6, pages 458-461
Created: 2011-09-22, modified: 2011-09-22![](https://www.biodiversitylibrary.org/pagethumb/26413638,60,60)
Published in Annals And Magazine of Natural History, in 1907, in volume 20, pages 389-398
Created: 2011-09-22, modified: 2011-09-22![](https://www.biodiversitylibrary.org/pagethumb/3779569,60,60)
Published in Proceedings of The Biological Society of Washington, in 1911, in volume 24, pages 228-229
Created: 2011-07-31, modified: 2013-11-21![](https://www.biodiversitylibrary.org/pagethumb/27415363,60,60)
Published in Annals And Magazine of Natural History, in 1897, in volume 20, pages 379-385
Created: 2011-09-23, modified: 2011-09-23![](https://www.biodiversitylibrary.org/pagethumb/10309520,60,60)
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1902, in volume 54, pages 389-412
Created: 2013-04-21, modified: 2013-04-21![](https://www.biodiversitylibrary.org/pagethumb/2308273,60,60)
Published in Proceedings of the Washington Academy of Sciences, in 1900, in volume 13, pages 157
Created: 2013-06-17, modified: 2013-06-17![](https://www.biodiversitylibrary.org/pagethumb/3830841,60,60)
Published in Proceedings of the Biological Society of Washington, in 1902, in volume 15, pages 245-246
Created: 2014-03-21, modified: 2014-03-21![](https://www.biodiversitylibrary.org/pagethumb/3336963,60,60)
Published in Proceedings of the Biological Society of Washington, in 1905, in volume 18, pages 229-230
Created: 2009-12-22, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/7761687,60,60)
Published in Proceedings of the United States National Museum, in 1913, in volume 46, issue 2013, pages 85-92
Created: 2010-10-12, modified: 2014-05-22![](https://www.biodiversitylibrary.org/pagethumb/28006997,60,60)
Published in Annals of the Missouri Botanical Garden, in 1977, in volume 64, pages 374-375
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/28003632,60,60)
Published in Annals of the Missouri Botanical Garden, in 1978, in volume 65, pages 1133-1254
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/27282371,60,60)
Published in Annals of the Missouri Botanical Garden, in 1981, in volume 68, pages 226
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/28001083,60,60)
Published in Annals of the Missouri Botanical Garden, in 1990, in volume 77, pages 588-590
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/642452,60,60)
Published in Novon, in 2001, in volume 11, pages 389-394
Created: 2011-01-28, modified: 2016-02-16![](https://www.biodiversitylibrary.org/pagethumb/26413647,60,60)
Published in Annals And Magazine of Natural History, in 1907, in volume 20, pages 398-401
Created: 2011-09-22, modified: 2011-09-22![](https://www.biodiversitylibrary.org/pagethumb/2345252,60,60)
Published in Proceedings of The Biological Society of Washington, in 1903, in volume 16, pages 119-120
Created: 2011-07-31, modified: 2013-09-06![](https://www.biodiversitylibrary.org/pagethumb/15666319,60,60)
Published in Proceedings of The United States National Museum, in 1906, in volume 29, pages 555-563
Created: 2011-06-30, modified: 2017-01-06![](https://www.biodiversitylibrary.org/pagethumb/15787063,60,60)
Published in Proceedings of The United States National Museum, in 1906, in volume 30, issue 1472, pages 819-825
Created: 2011-06-30, modified: 2013-03-08![](https://www.biodiversitylibrary.org/pagethumb/7571436,60,60)
Published in Proceedings of The United States National Museum, in 1912, in volume 42, pages 21-26
Created: 2011-06-30, modified: 2017-01-06![](https://www.biodiversitylibrary.org/pagethumb/8872099,60,60)
Published in Proceedings of the Washington Academy of Sciences, in 1900, in volume 2, pages 83-109
Created: 2015-04-03, modified: 2015-04-03![](https://www.biodiversitylibrary.org/pagethumb/2265723,60,60)
Published in Proceedings of the Biological Society of Washington, in 1905, in volume 18, pages 253
Created: 2014-11-11, modified: 2014-11-11![](https://www.biodiversitylibrary.org/pagethumb/3779494,60,60)
Published in Proceedings of the Biological Society of Washington, in 1911, in volume 24, pages 161-162
Created: 2013-03-08, modified: 2013-03-08![](https://www.biodiversitylibrary.org/pagethumb/8915357,60,60)
Published in Smithsonian Miscellaneous Collections, in 1929, in volume 81, issue 9, pages 1-30
Created: 2013-06-11, modified: 2013-06-11![](https://www.biodiversitylibrary.org/pagethumb/7761842,60,60)
Published in Proceedings of the United States National Museum, in 1913, in volume 46, issue 2034, pages 413-429
Created: 2010-10-12, modified: 2013-01-28![](https://www.biodiversitylibrary.org/pagethumb/27278815,60,60)
Published in Annals of the Missouri Botanical Garden, in 1987, in volume 74, pages 416-423
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/637115,60,60)
Published in Novon, in 1992, in volume 2, pages 322-328
Created: 2011-01-28, modified: 2016-02-16