Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 1-53

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 74-90

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 91-112

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 113-118

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 167-184

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 185-204

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 205-216

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 250-312

Published in Journal of the Arnold Arboretum, in 1976, in volume 57, pages 526-530.

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 1, pages 54-73

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 1, pages 119-126

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 2, pages 129-166

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 3, pages 217-218

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 3, pages 219-249

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 3, pages 313-368

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 3, pages 369-403

Published in Journal of The Arnold Arboretum, in 1976, in volume 57, issue 4, pages 405-425