C N T E N T S 



Tage. 



Introductory statement 5 



Inventory 9 



Index of common and scientific names 87 



ILLUSTRATIONS. 



Page. 

 Plate I. The service tree, a neglected Mediterranean fruit tree (Sorbus do- 

 mestical,. S. P. I. Nos. 41703 and 41804) 12 



II. The jequitiba, a giant forest tree of Brazil (Cariniana legalis (Mart.) 



Kuntze. S. P. I. No. 41933) 12 



III. The dago hay a, the best tropical yam, from the island of Guam. 



growing at Miami, Fla. (Dioscorca alata L. S. P. I. No. 39705).. 50 



IV. The Manawa yam, from the Republic of Panama (Dioscorea sp. 



S. P. I. No. 42052) 50 



V. Tubers of the white yampee, a variety of yam grown in the Canal 



Zone (Dioscorea trifida L. f. S. P. I. No. 42053) 50 



VI. Another form of yampee, from the Canal Zone (Dioscorea sp. S. P. I. 



No. 42054) 50 



3 



