6 BULLETIN 205, U. S. DEPARTMENT OF AGRICULTURE. 
gelatinous substance. The seeds are covered by minute tangled 
processes which cause them to cohere in masses. The fruit ripens 
in August. 
DISTRIBUTION. 
Frogbit is a local plant, especially in the northern part of its 
range. It has been found at Braddock Bay, N. Y.,. Monmouth 
Fig. 3.— Frogbit. 
County, N. J., and in Delaware, but the normal range probably is 
from North Carolina and Missouri southward. The range here 
mapped (fig. 4) is not complete, since the plant has been found in 
Mexico. 
PROPAGATION. 
Frogbit is extensively used in aquaria and water gardens, and 
may be obtained from, dealers in plants for such purposes. The 
plants themselves should be set out in water a few inches deep over 
a mucky bottom or in soft mud near the water's edge. 
