CONTENTS. 



Page. 



Introductory statement 1 



Inventory 6 



Index of common and scientific names 95 



I L L U S T R A T IONS. 



Page. 

 Plate I. A hard-shelled passion fruit from tropical America. {Passi- 



flora maliformis L., S. P. I. No. 53180) 3G 



II. The parent tree of the Carchi avocado. {Persea americana 



Mill., S. P. I. No. 53185) 36 



III. The Carchi avocado, a variety of the Mexican race. {Persea 



americanu Mill., S. P. I. No. 53185) 36 



IV. The Yungara potato, one of the best varieties of the Ecua- 

 dorian highlands. {Solarium tnl)erosnm L., S. P. I. No. 



53195) 36 



V. The higacho, an Andean relative of the papaya. {Carica 



chrysopetala Heilboi-n, S. P. I. No. 53754) 86 



VI. Akala, a giant Hawaiian raspberry. {Rubus macrael A. Gray, 



S. P. I. No. 53847 86 



Figure 1. Map of Burma, Assam, and Slam, showing the route followed 

 by J. F. Rock in his successful hunt for the true chaul- 

 moogra tree iv 



III 



