VARIOUS FOOD PLANTS 



59 



Fig. 57. — Sweet Potato. Flower-clusters coming from leaf-axils, *. 

 Flower, cut vertically; natural size. Fruit, j. Seed, cut in half 

 verticallj' to show the folded germ in seed-food (dotted) , t. (Original.) 



Fig. 58, I. — White 

 Potato (Solaiium 

 tubcrosinn, Night- 

 shade Family, So- 

 la nacca). Base of 

 plant growing 

 from an old tuber 

 a n d producing 

 new tubers at the 

 tip of under- 

 ground branches 

 of the stem. 

 (Baillon.) — Plant 

 a perennial con- 

 tinued from year 

 to year by its tu- 

 bers; stem erect, 

 about 0.7 m. tall; 

 leaves dull green, 

 hairy; flowers lilac 

 or white; fruit 

 fleshj-, green. 



