198 ALIEN FLORA OF BRITAIN 



[Polypogon monspeliense, Desf. Native of wet 

 sandy ground from the Mediterranean region, extending 

 along the west coast of Europe to England. A weed 

 of cultivated and waste ground of very wide distribution. 

 In England it has more frequently been recorded as 

 a casual introduction than as a native, in some cases 

 being traced to imported grain and in others to 

 imported wool.] 



Secale cereale, L. A frequent stray from rye-fields, 



Setaria glauca, Beauv. Probably native on the 

 grassy hills of Southern China. A weed of cultivated 

 and waste ground over the greater part of the world 

 — as such it is not uncommon in England. 



Setaria italica, Beauv. Probably a weed of South- 

 East Asia. It has long been cultivated in Europe,, 

 and its seeds are frequently imported into England 

 to feed cage-birds. It thus appears as a casual of waste 

 ground. 



Setaria verticillata, Beauv. A frequent weed of 

 cultivated and waste ground in Central and Southern 

 Europe and various other parts of the world. In 

 England it is rare, and hardly more than a casuaL 

 Its introduction has been traced to introduced oil seed 

 in one instance. 



Setaria viridis, Beauv. A native of Manchuria, and 

 a weed of cultivated and waste ground in the greater 

 part of the North Temperate Zone. Its native range 

 is possibly wider than above indicated, but cannot be 

 supposed to extend to England, where the species has. 



