Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 33-59

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 60-74

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 89-99

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 106-116

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 117-125

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 126-136

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 137-146

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 147-159

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 171-221

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 266-269

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 270-272

Published in Journal of the Arnold Arboretum, in 1966, in volume 47, pages 293-300

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 1, pages 1-8

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 1, pages 9-22

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 1, pages 23-32

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 2, pages 100-105

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 2, pages 160-170

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 3, pages 222-247

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 3, pages 262-265

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 4, pages 301-312

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 4, pages 319-322

Published in Journal of The Arnold Arboretum, in 1966, in volume 47, issue 4, pages 323-346