Bui. 1021, U. S. Dept. of Agriculture 
Plate V. 
American Varieties of Sweet Potatoes. II. 
Fig. 1. — Young and old foliage of Yellow Strasburg. Fig. 2.— Triumph, a repre- 
Bentative of the Spanish group, Spanish section ; a heavy yielder of roots 
that are often very, irregular. Fig. 3. — Porto Rico, a representative of the 
Spanish group, Bermuda section. Fi<;. 4. —Foliage of Porto Kico. one of the 
best varieties. 
