65 



coriaceo-membranaceae ; racemi elongati, macranthi ; bracteae 

 flores superantes, integrae ; flores extus intusque glabri ; capsulae 

 Bubglobosae, acntiusculao, manifeste subalato-costatae. 



Manihot dichotoma does not form quite so large a tree as Ceara 

 M. Glaziorii, and is from 5-12 metres (16-H9 feet) in height, at 

 the same time the growth of the crown is much more compact 

 and for the most part densely dichotomously branched. The 

 stem also does not become so thick and the bark is thinner and 

 nsually paler, though a variety with a darker bark is known. 

 The leaves of M. dichotoma are 3-5-partite— it is only in the 

 seedlings that they are somewhat peltate— they are also much 

 smaller than those of M. Glaziovii. The smaller leaves and the 

 large, long seeds afford the most important characters for distin- 



from 



M. 



from 12'5*-14-5° S. lat., where it extends from the region of the 



middle Rio Paragi 



small 



Jequie in that locality, which serves as the centre of the rubber 



trade 



Sketch map of a portion of N.E. Brazil to show the distribution of the newly 



Mani^obas 



3. Region of M. piaukyensi*. 

 Regio 



1. Regionjof M< dichotoma. 



2. Region of M. heptaphylla. 

 Railway from Bahia to Joazeiro on the Rio Sao Francisco 



31012 



B 



