90 THE SWEET POTATO. 



Kala. Sandwich Islands. 



Formula : 



Al B2 CI Dl El-2 F2 Gl + 3 H3 12 J2 K3. 



Stems little longer than 4 feet, green, with here and there brownish 

 or slightly purplish patches, ts inch in diameter or less. 



No star. On the lower surface of the base of the midrib there 

 is a purple spot, usually noticeable only in young leaves. In some 

 leaves even the lower surface of the veins is purplish. 



Type leaf Fig. 28. 



Kapo. Sandwich Islands. 

 Formula : 



A3 Bl CI D4 El Fl Gl H2 14 J5 K3. 



Stems long, % inch in diameter, very rarely thicker; dark purple, 

 lighter purple at the tip, but even there dark purple around the 

 axils of the leaves. 



Star very small. Lower surface of veins rather light purple. 

 Latex very abundant, dripping ofT from a cut stem. 



Type leaf Fig. 42. 



Kauaheahe. Sandwich Islands. 

 Formula : 



A3 B2 CI D2 E2 FI Gl H3 14 Jl K3, 



Stems long, green, with purple around the base of the leaves and 

 near the tip. The tips are either entirely purple for about six 

 inches, or green with purple around the axils of the leaves. 



Star small, but clear. Veins rather weakly marked with purple on 

 the lower surface. 



Hairs absent on surface, scattered on the edge of the leaf. 



Type leaf Fig. 48. 



Kawelo. (Koali), Sandwich Islands. 



Formula : 



Al B2 CI D2 E2 F2 G3 H3 13 Jl K3, 



Stems long, i% inch or more in diameter, whitish, with purple 

 around the axils of the leaves, and occasional sunburnt patches on 

 the upper surface. Leaves very light yellowish-green. 



Type leaf Fig. 31. 



Especiallj' in young, full-grown leaves there is a faint purple spot 

 on the lower sxirface of the midrib, where it springs from the petiole. 



Hair absent. 



