SECT. II 



PHANEROGAMIA 



647 



//'. flavescens, and otlier species of this Malayan genus of lianes are also rubber- 



Fio. 6S0. —Gentiana luten. n and b, Flower-buds (uat. size), showing 

 calyx (ft) and twisted corolla (/>) ; r, trans\erse section of ovary. 

 Official. (After Berg and Schmidt.) 



Fig. 681. — Erythraca ccn- 

 tauriwn. Q nat. size.) 



yielding plants. Gutta-percha is present in the latex of Tabernaemontana Donnell 

 Smithii, which is used as a shade-tree on coffee plantations in Central America. 



