GRASSES OF BRITAIN. 245 



currence in Norway, Sweden, France, Germany, Holland, Belgium, 

 Switzerland, Italy, Spain, Portugal, Turkey, Greece, and the Islands 

 of the Mediterranean. It is comparatively of little value for agi-icul- 

 tural purposes. 



Flowers in July, and ripens its seed in August, 



The accompanying figure was taken from specimens gathered in 

 Suffolk. 



Explanation of Plate CX. Aira canescens, natural size. 



Fig. I. Spikelet, showing the two glumes and two florets. 



2. Florets removed from the glumes, showing the palese and awns. 



3. Awn showing the fringe in the centre. . -g 



4. Ligule of upper sheath. §" 



5. Ovarium, pistils, stamens, and scales. ^ 



