UNITED STATES DEPARTMENT OP AGRICULTURE 
BUREAU OP PLANT INDUSTRY 
OFFICE OF FOREIGN SEED AND PLANT INTRODUCTION 
WASHINGTON, D. C. 
Washington Scientific Staff. 
David Falrchlld, 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 Blsset, Plant Introducer, In Charge of Distributions. 
J. B. Norton, Wilson Popenoe, 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, J. H. Johnson, 
R. N. Jones, P. G. Russell, and C. C. Thomas, Assistants. 
Edward Goucher, Plant Propagator. 
Field Stations Scientific Staff. 
R. L. Beagles, Superintendent in Charge , Field Station, 
Chlco, Cal. 
E. 0. Orpet, Assistant. 
J. E. Morrow, Superintendent in Charge , (Yarrow) Field 
Station, Rockville, Md. 
Edward Slmmonds, Superintendent in Charge, Field Station, 
Miami, Fla. 
Henry E. Juenemann, Superintendent In Charge , Field Station, 
Belllngham, Wash. 
D. A. Blsset, Assistant in Charge , Field Station, Brooks- 
ville, Fla. 
E. J. Rankin, Assistant in Charge , Field Station, Savannah, Ga. 
Special Collaborators - 
Mr. Thomas W. Brown, Cairo, Egypt; Mr. H. M. Curran, Bahia, 
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.; Mr. K. L. Lyon, Honolulu, 
Hawaii; Mr. H. Nehrling, Gotha, Fla.; Mr. Charles Simpson, 
Llttleriver, Fla.; 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.; Dr. F. A. Woods, Boston, Mass. 
