Published in Journal of The Arnold Arboretum, in 1926, in volume 7, issue 2, pages 71-74

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

Published in Journal of The Arnold Arboretum, in 1926, in volume 7, issue 3, pages 151-227

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

Published in Journal of The Arnold Arboretum, in 1926, in volume 7, issue 4, pages 253-266

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