Published in Rhodora, in 1979, in volume 81, issue 828, pages 567-573

Created: 2016-07-19, modified: 2016-07-19

Published in Journal of the Arnold Arboretum, in 1973, in volume 54, pages 422-434

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

Published in Annals of the Missouri Botanical Garden, in 2015, in volume 100, issue 3, pages 141-149

Created: 2024-06-27, modified: 2024-06-27

Published in Annals of the Missouri Botanical Garden, in 1984, in volume 71, pages 294-296

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

Published in Journal of the Arnold Arboretum, in 1975, in volume 56, pages 398-412

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

Published in Annals of the Missouri Botanical Garden, in 1981, in volume 68, pages 254-274

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