Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 125-132
Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 171-187
Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 188-196
Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 395-416
Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 457-496
Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 569-579
Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 1-31
Published in Journal of the Arnold Arboretum, in 1941, in volume 22, pages 197-203
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 1, pages 32-59
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 1, pages 60-80
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 1, pages 81-109
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 1, pages 110-124
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 1, pages 133-142
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 1, pages 143-144
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 297-342
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 343-374
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 375-388
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 417-431
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 432-442
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 443-454
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 3, pages 455-456
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 145-170
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 204-208
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 209-218
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 219-221
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 222-224
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 225-230
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 231-252
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 253-270
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 2, pages 271-295
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 4, pages 497-528
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 4, pages 529-542
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 4, pages 543-555
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 4, pages 556-568
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 4, pages 580-581
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 4, pages 582-593
Published in Journal of The Arnold Arboretum, in 1941, in volume 22, issue 4, pages 598