Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 1, pages 43-83

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 1, pages 84

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 1, pages 85-96

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 1, pages 97-103

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 2, pages 183-205

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 2, pages 206-214

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 2, pages 215-221

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 2, pages 222-270

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 3, pages 271-298

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 3, pages 299-318

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 3, pages 342-348

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 3, pages 349-395

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 420-430

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 431-453

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 454-466

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 467-480

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 481-487

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 488-497

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 497-500

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 501

Published in Journal of The Arnold Arboretum, in 1944, in volume 25, issue 4, pages 503-521

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, issue 1, pages 1-42

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, pages 437-450

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, pages 129-131

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, pages 133-182

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, pages 319-341

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, pages 397-405

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, pages 407-419

Published in Journal of the Arnold Arboretum, in 1944, in volume 25, pages 122-128