CONTENTS. 



Page. 



Introductory statement 1 



Inventory 7 



Index of common and scientific names 39 



ILLUSTRATIONS. 



Page. 

 Plate I. The mamoncillo, a neglected fruit tree of tropical America. 



{Melicocca Ujuga L., S. P. I. No. 54521) 22 



II. A relative of the papaya. {Carica sp., S. P. I. No. 54529) 22 



III. A neglected fruit of tropical America. {Spondias viombin, L., 



S. P. I. No. 54532) 22 



IV. The capuchin orange of Chile. {Citrus sinensis (L.) Osbeck, 



S. P. I. No. 54651) 22 



V. Fruits of the capuchin orange, natural size. {Citrus sinensis 



(L.) Osbeck. S. P. I. No. 54651) 32 



VI. The lucma, a popular fruit in Chile. (Lvcuma obovata H. B. K-, 



S. P. I. No 54653) 32 



Figure 1. Map of Central America and South America, showing Wilson 



Popenoe's exploration routes from 1919 to 1921 2 



III 



