CONTENTS. 



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. {Garica sp., S. P. I. No. 54529) 22 



III. A neglected fruit of tropical America. (Spondias momhin, 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. {Lucuma ohovata H. B. K,, 



S. P. I. No 54653) 32 



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



Popenoe's exploration routes from 1919 to 1921 2 



in 



