COTTON VARIETIES 



43 



are much closer together as a rule than in any of the types 

 later described in this classification. The size of bolls 

 and seed is quite variable. 



50. Rio Grande type. The plants of this group are 

 slender in growth. The fruiting branches are long-jointed, 



FIG. 10. Plant of the Peterkin variety of cotton, 

 representing the Peterkin group. 



slender, and rather straight. The characters that serve 

 most to distinguish the Rio Grande from other types are 



(1) a high percentage of lint, usually 35 to 40 per cent; 



(2) small, nearly naked, dark-colored seeds; (3) bolls 

 medium to very small in size, the locks of cotton remain- 

 ing rather compact for some time after the bolls open. 

 This group is named for an early variety which was quite 



