UNITED STATES DEPARTMENT OF AGRICULTURE 
BUREAU OF PLANT INDUSTRY 
OFFICE OF FOREIGN SEED AND PLANT INTRODUCTION 
WASHINGTON, D. C. 
Washingon Scientific Staff. 
David Fairchild, Agricultural Explorer In Charge. 
P. H. Dorsett, Plant Introducer, in Charge of Field Stations. 
B. T. Galloway, Plant Pathologist, in Charge of Detention 
Laboratories . 
Peter Bisset, Plant Introducer, in Charge of Distribution. 
Wilson Popenoe, J. F. Rock, and H. L. Shantz, Agricultural 
Explorers. 
R. A. Young, Plant Introducer, in Charge of Dasheen Investi- 
gations. 
H. C. Skeels, Botanist, in Charge of Collections. 
G. P. VanEseltine, Asst. Botanist, in Charge of Publications. 
H. E. Allanson, E. L. Crandall, L. G. Hoover, F. J. Hopkins, 
R. N. Jones, P. G. Russell, and C. C. Thomas, Assistants. 
Edward Goucher, Plant Propagator. 
Field Station* Scientific Staff. 
R. L. Beagles, Superintendent in Charge , Field Station, 
Chico, Calif . 
J. E. Morrow, Superintendent in Charge , (Yarrow) Field 
Station,* Rockvllle , Md. 
Edward Slmmonds, Superintendent in Charge, Field Station, 
Miami, Fla. 
Henry E. Juenemann, Superintendent in Charge , Field Station, 
Belllngham, Wash. 
D. A. Bisset, Assistant in. Charge , Field Station, Brooks- 
vllle, Fla. 
E. J. Rankin, Assistant In Charge , Field Station, Savannah, Ga. 
Special Collaborators. 
Mr. Thomas W. Brown, Cairo, Egypt; Mr. H. M. Curran, Bahla, 
Brazil; Mr. M. J. Dorsey, University Farm, St. Paul, Minn.; 
Mr. Robt. H. Forbes, Cairo, Egypt; Mr. A. C. Hartless, 
Seharunpur, India; Mr. E. W. D. Holway, Faribault, Minn.; 
Mr. Barbour Lathrop, Chicago, 111.; Dr. H. L. Lyon, Honolulu, 
Hawaii; Mr. H. Nehrling, Gotha, Fla.; Mr. Charles T. Simpson, 
Littleriver, Fla.; Mr. H. P. Stuckey, Georgia Experiment Station, 
Experiment, Ga.; Dr. L. Trabut , Director, Service Botanique, 
Algiers, Algeria; Mr. H. N. Whitford, School of Forestry, 
New Haven, Conn.; Mr. E. H. Wilson, Arnold Arboretum, Jamaica 
Plain, Mass. 
