Published in Botanical Museum Leaflets, Harvard University, in 1942, in volume 10, pages 257-299

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

Published in Botanical Museum Leaflets, Harvard University, in 1943, in volume 11, pages 137-170

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

Published in Botanical Museum Leaflets, Harvard University, in 1944, in volume 11, pages 201-214

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

Published in Botanical Museum Leaflets, Harvard University, in 1945, in volume 11, pages 249-260

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

Published in Botanical Museum Leaflets, Harvard University, in 1945, in volume 12, pages 89-116

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

Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 14, pages 215-239

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

Published in Botanical Museum Leaflets, Harvard University, in 1951, in volume 14, pages 240-261

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

Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 1, pages 81-109

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

Published in Bulletin du Muséum national d'histoire naturelle, in 1937, in volume 9, issue 4, pages 283-306

Created: 2017-01-31, modified: 2017-01-31