GRASSES OF BRITAIN. 187 



peculiar to England, but is now found in Germany. It grows natu- 

 rally in muddy salt-marshes near Cley, Norfolk ; on the Essex 

 coast ; and near the powder magazine, about four miles from "Wool- 

 wich. 



Flowers in July, and ripens its seed about the end of August 

 Of no agricultural importance. 



The accompanying figiu*e was taken from a specimen gathered in 

 Norfolk. 



Explanation of Plate LXXXI. Polypogon littoralis, natural size. 



Fig. 1. Spikelet showing the two glumes and floret. ^ -a 



2. Floret showing the two palea;. 



3. Ligule of upper sheath. 



4. Ovarium, pistils, and stamens. ^ 



