WALDRON— THE PEANUT 



307 



Of the several cultivated varieties grown today there are recog- 

 nized two general types of plants as follows: (i) The bunch type, 

 growing erect and bearing its fruit around the base of a single stem. 

 The Spanish variety is an example. It can withstand considerable 

 moisture conditions and its erectness suggests a shade loving ten- 

 dency. (2) The trailing type, with its several branches spread on 

 the soil, succeeds best in a hot sandy soil, indicating greater xero- 

 phytic tendencies. The Jumbo variety is an example. Now, the 

 wild Brazilian species A. pusilla, is an erect plant, simulating the 



Figure 2 

 Outline Map of Brazil indicating the reported distribu- 

 tion of the different species of Arachis. 

 I. A. pusilla. 

 1. A. prostrata. 



3. A. villosa. 



4. A. glabrata. 



5. A. marginata. 



6. A. tuberosa. 



bunch variety and is reported as growing in dry woods and shady 

 places. Another, A. prostrata^ is more trailing and grows in open 

 sandy places and so, simulating the prostrate cultivated variety, is 



