Published in Botanical Museum Leaflets, Harvard University, in 1976, in volume 24, pages 241-247

Created: 2016-02-07, modified: 2016-07-26

Published in Phytologia, in 1994, in volume 77, pages 381-389

Created: 2011-01-26, modified: 2023-02-16

Published in Rhodora, in 1977, in volume 79, pages 115-122.

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

Published in Biol Bull, in 1963, in volume 125, pages 464-469

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

Published in Biol Bull, in 1968, in volume 135, pages 263-272

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

Published in Novon, in 1992, in volume 2, pages 185-189

Created: 2011-01-28, modified: 2016-02-16

Published in Biol Bull, in 1962, in volume 123, pages 80-85

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

Published in Biol Bull, in 1962, in volume 123, pages 86-93

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

Published in Madroño, in 1975, in volume 23, issue 2, pages 88-95

Created: 2016-02-15, modified: 2016-07-07

Published in Madroño, in 1992, in volume 39, issue 2, pages 137-149

Created: 2016-02-15, modified: 2016-07-07

Published in Madroño, in 1975, in volume 23, issue 4, pages 169-173

Created: 2016-02-15, modified: 2016-07-07

Published in Novon: A Journal for Botanical Nomenclature, in 2013, in volume 22, issue 4, pages 424-427

Created: 2017-02-12, modified: 2017-02-12

Published in Proceedings of The Biological Society of Washington, in 2002, in volume 115, pages 611-615

Created: 2011-07-27, modified: 2011-07-27