Published in Novon: A Journal For Botanical Nomenclature, in 2009, in volume 19, pages 222-228

Created: 2014-06-14, modified: 2016-02-16

Published in Rhodora, in 1936, in volume 37, issue 433, pages 20-22

Created: 2014-06-16, modified: 2016-07-26

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 69-128

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

Published in Annals And Magazine of Natural History, in 1922, in volume 10, pages 530-534

Created: 2011-09-23, modified: 2011-09-23

Published in Mitteilungen der Botanischen Staatssammlung München, in 1971, in volume 10, pages 30-37

Created: 2016-08-29, modified: 2016-08-29

Published in Pacific Science, in 1968, in volume 22, issue 1, pages 52-55

Created: 2017-09-10, modified: 2017-09-10

Published in Annals of the Missouri Botanical Garden, in 1938, in volume 25, pages 515-718

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

Published in Biol Bull, in 1982, in volume 163, pages 276-286

Created: 2010-01-07, modified: 2011-06-21

Published in Nautilus, in 2009, in volume 123, issue 3, pages 166-171

Created: 2016-04-24, modified: 2016-04-24