2 BULLETIN" 58, U. S. DEPARTMENT OF AGRICULTURE. 
tant food for the larger species of ducks not only in the Mississippi 
Delta but throughout the whole range of the plant. 
DESCRIPTION OF PLANT. 
The Delta duck potato (fig. 1) when well developed stands about 
18 inches above the soil. The broadly eUiptical leaves have a char- 
Fig. 1.— Delta duck potato. (Scale is 18 inches long.) 
acteristic firm appearance and a beautiful clear green color. Like 
all plants of its genus, this species produces the flowering peduncles 
from about the center of the group of leafstalks; these peduncles bear 
