I90 ALIEN FLORA OF BRITAIN 



ground over other parts of the Continent, as well as 

 in America, South Africa, and New Zealand. In England 

 it has been recorded from waste ground in several of the 

 southern counties. 



Bromus arduennensis, Dum. A Belgian grass 

 recorded with many other introductions at Penzance 

 in Cornwall. 



Bromus arvensis, L. Native in grassy places of 

 Southern Europe, becoming a weed of cultivation in 

 the east and north. It is somewhat widely distributed 

 in England in corn and clover fields, often under 

 conditions that suggest its introduction with agricultural 

 seed or foreign grain and hay. 



Bromus brachystachys, Hornung. A weed of the 

 Orient which has occurred among aliens introduced 

 with Turkish barley. 



Bromus interruptus, Druce. This interesting addition 

 to our weeds of cultivation was first distinguished by 

 Mr. Druce, and described as a species in 1895. ^^s 

 range includes the southern portion of England. It 

 remains to be proved whether it grows as a native 

 elsewhere, but at present it is only known as an arti- 

 ficially supported weed. 



Bromus macrostachys, Desf. A casual near the 

 West Dock, Hull. Indigenous in the Mediterranean 

 region. 



Bromus madritensis, L. A native of the Mediter- 

 ranean region, and also a weed there on roadsides, and 



