THE SWEET POTATO. 97 



larger. Small purplish spot on the louver side of the base of the 

 midrib. Hair all over upper surface of leaf. 

 Type leaf Fig, 73. 



Vincentonian. Jamaica. 



Formula : 



Al B2 C2 Dl E2 F2 G3 H2 14 J3 K2. 



Stems usually less than 3 feet long, -^ inch thick or more, green, 

 with occasional blotches of sunburn. 



Plant of bushy habit. 



Veins faintly purple for a short distance on the lower surface, or 

 only at the place of junction of the primary veins. 



Hair over a large part of the tip of the center lobe, continued 

 down along the veins. 



Type leaf Fig. 34. 



Vinelets Beech. Louisiana. 

 Formula : 



A2 Bl-2 C2 Dl El-2 F2 G4 Hl-2 II Jl K3. 



Stems short, rarely over 3 feet, green, between y^,, and -^s inch 

 in diameter. 



Hair covering a large part of the apex of the leaf, and continued 

 down along the veins. 



Latex very abundant. All leaves are round. 



Type leaf Fig. 37. 



Eesembles Caroline Lee, but differs from it in the length and 

 thickness of stalk, and size and shape of leaf. 



White Colombia. Colombia. 

 Formula : 



A4 Bl CI D3 El-2 Fl G4 H2-3 II J2 Kl. 



( Plants not old enough to be certain about all the measurements ) . 



Stems long, between % and ^ inch thick, green to purple. Star 

 very large in young leaves, disappearing in old ones; at times not 

 present in young leaves. Color of leaves ranging from deep purple 

 to green. 



Hairs few along the veins, or absent. 



Type leaf Fig. 55. 



So far no difference has been observed between this and Yellow 

 Colombia. 



