Published in Journal of The Arnold Arboretum, in 1923, in volume 4, issue 1, pages 8-33
Created: 2016-07-07, modified: 2025-12-17
doi:10.5962/p.185180
Published in Journal of The Arnold Arboretum, in 1923, in volume 4, issue 4, pages 255-265
Created: 2016-07-07, modified: 2025-12-17
doi:10.5962/p.185181