Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 38-45

Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 67-118

Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 300-302

Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 303-332

Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 344-401

Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 441-452

Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 568-610

Published in Journal of the Arnold Arboretum, in 1974, in volume 55, pages 611-662

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 1, pages 1-37

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 1, pages 46-50

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 1, pages 59-66

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 1, pages 119-122

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 2, pages 125-181

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 2, pages 182-214

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 2, pages 214

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 2, pages 215-263

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 2, pages 269-290

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 3, pages 333-343

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 3, pages 402-424

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 3, pages 431-434

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 3, pages 458-468

Published in Journal of The Arnold Arboretum, in 1974, in volume 55, issue 4, pages 525-567