SWEET-POTATO 433 



Group II. Leaves deeply cut ; vines long. 



Group III. Leaves shouldered, or very slightly lobed 

 (Fig. 190) ; vines long. 



Group IV. Leaves with margins entire or nearly un- 

 broken by lobes or shoulders (Fig. 190) ; 

 vines long. 



Each of these groups, except possibly the vineless varieties, 

 may be subdivided into three classes, according to the texture 



Fig. 189. — A Bkanch of a Vineless Sweet-potato Plant. 

 Showing crowded position of leaf-stems. (After Price.) 



and flavor, which may be either sirupy, mealy, or intermediate. 

 Each of these subdivisions may be further subdivided into three 

 groups, according to whether the uncooked flesh is yellow, white 



Fig. 190. — Thbee Shapes of Sweet-potato Leaves. 

 On left, cut-leaf type ; in center, shouldered leaf ; and on right, entire 

 or "round" leaf. 

 2p 



