Published in Journal of The Botanical Research Institute of Texas, in 2008, in volume 2, issue 2, pages 770

Created: 2015-12-01, modified: 2015-12-01

Published in Botanical Gazette, in 1919, in volume 68, issue 1, pages 22-53

Created: 2017-03-14, modified: 2017-03-14

Published in Botanical Gazette, in 1922, in volume 74, issue 1, pages 1-31

Created: 2017-03-14, modified: 2017-03-14

Published in Biol Bull, in 1940, in volume 78, pages 29-34

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

Published in Bulletin of the Museum of Comparative Zoology, in 1939, in volume 85, pages 65-94

Created: 2011-06-14, modified: 2021-04-05

Published in Biol Bull, in 1939, in volume 76, pages 162-170

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

Published in Proceedings of The American Philosophical Society, in 1904, in volume 43, issue 177, pages 278-289

Created: 2017-01-01, modified: 2017-01-01

Published in Biol Bull, in 1939, in volume 76, pages 256-279

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

Published in Biol Bull, in 1972, in volume 143, pages 112-126

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