THE WHOLE ART OF RUBBER-OROW IXC, 



CHAPTER XL 

 Trees that Count— The New Manihots. 



(a) m. dichotoma ; (b) m. piauhyensis ; 



(c) M. HEPTAPHYLLA. 



A BOUT four years ago the botanical world was 

 ^* startled by the announcement that three new 

 Manihots, distinct in every way from the well- 

 known Manihot Glaziovii, had been discovered in 

 Brazil — one in the province of Jequie, the second 

 growing on the mountains of the Rio San Francisco, 

 and the other confined to the country adjoining the 

 State of Piauhy. The first was named M. dicho- 

 toma, the second M. heptaphylla, and the third 

 M. piauhyensis. The botanist who made the dis- 

 covery was Dr. Ule, a distinguished savant of the 

 Berlin Botanical Gardens. 



His claim was subsequently endorsed by the Kew 

 authorities, who declared that the tree was not to be 

 confounded with the Manihot of Ceara (Manihot 

 Glaziovii), from which it was said to be separated by 

 features of a remarkable and distinctive character. 



But a great deal has been learnt about these Mani- 

 hots since 1906. They have been introduced into 

 East Africa, Ceylon, Malay States, Hawaii, the 



