PREFACE XV 



Japanese Flowering Cherry: Homer C. Skeels, Bureau of Plant Industry, 

 Washington, D. C; Dr. T. Tanaka, Kanagawa Agricultural Experi- 

 ment Station, Of una, near Yokohama, Japan. 



Lilac (Syringa) and Willow (Salix) and special proofreading: Dr. Alfred 

 Rehder, Arnold Arboretum, Jamaica Plain, Mass. 



Nuts: WiLLARD G. BiXBY, Baldwin, N. Y. 



Oaks (Quercus):.W. W. Ashe, Washington, D. C. 



Orchids: Oakes Ames and F. Tracy Hubbard, Ames Botanical Laboratory^ 

 North Easton, Mass. 



Peony: Dr. A. P. Saunders, Chnton, N. Y. 



Palms: Dr. O. F. Cook, Bureau of Plant Industry, Washington, D. C. 



Phlox: J. D. EisELE, Henry A. Dreer, Inc., Philadelphia, Pa.; Prof. C. L. 

 Thayer, Massachusetts Agricultural College, Amherst, Mass. 



Prunus: John Dunbar, 208 Municipal Bldg., Rochester, N. Y. 



Rose: J. Horace McFarland, Harrisburg, Pa. ; Robert Pyle, West Grove, Pa. 



Rocky Mountain Plants: S. R. De Boer, Denver, Colo. 



Sweet Pea: George W. Kerr, Doylestown, Pa.; S. C. Vick, 205 Elwood Ave., 

 Newark, N. J. 



Waterlily: Peter Bisset, Bureau of Plant Industry, Washington, D. C. 



Common names and abbreviations: Warren H. Manning, North Billerica, 

 Mass. 



Research work on common names: E. S. Steele, 1522 Q St., N. W., Wash- 

 ington, D. C. 



Research work on Latin names: Dr. Sidney F. Blake, Bureau of Plant 

 Industry, Washington, D. C. 



Acknowledgment is also made to numerous correspondents rendering special 

 service in proofreading and suggesting common name changes: Gordon 

 D. Cooper, 4614 Prospect Ave., Cleveland, Ohio; L. P. Jensen, Mis- 

 souri Botanical Garden, St. Louis, Mo.; B. W. Pond, 18 Tremont St., 

 Boston, Mass.; Prof. C. S. Sargent, Arnold Arboretum, Jamaica Plain, 

 Mass.; Norman Taylor, Brooklyn Botanic Garden, Brooklyn, N. Y.; 

 Robert Wheelwright, 56 W. 45th St., New York, N. Y. 



AMERICAN JOINT COMMITTEE 

 Sub-Committee: ON HORTICULTURAL NOMENCLATURE 

 Frederick Law Olmsted j HORACE McFARLAND, Chairman 



Frederick V. Co viLLE xtat^t^^tt^ t^t^t ot-^- o * 



Harlan P. Kelsey HARLAN P. KELSE^ , Secretary 



Participating Organizations: 



American Association of Nurserymen 



Ornamental Growers' Association 



American Society of Landscape Architects 



American Pharmaceutical Association 



American Institute of Park Executives 



Society of American Florists and Ornamental Horticulturists 



Cooperating Organizations: 



American Dahlia Society American Pomological Society 



American Gladiolus Society American Rose Society 

 American Iris Society American Seed Trade Association 



American Peony Society American Sweet Pea Society 



The membership of the participating committees is given on page 547. 



