THE SWEET POTATO. 98 



Yellow Red. Louisiana. 



Formula : 



A3 B2 CI D4 E2 Fl Gl H2 13-4 J2 K3. 



Stems long, ^s inch in diameter at the thickest point, dark purple. 

 Star well marked, lower surface of veins purple. 

 Hairs on tip of middle lobe and along large veins. 

 Type leaf Fig. 49. 



Yellow Strau8«berg. Various States of the Union. 



Formula : 



A5 B1-2C1 D3 El-2 Fl Gl Hl-2 11-2 Jl-2 Kl. 



Stems long, between % inch and ^ inch in diameter, greenish- 

 brown to purple, but purple for most of their length. 

 Halberd-shaped leaves prevailing. 

 Many leaves over 4 inches in diameter, but most leaves less than 



4 inches across. 



Star faint, veins faintly purple on the lower surface. 

 Hairs scant along the veins. 

 Type leaf Fig. 70. 



