GRAMINEM 191 



in cultivated and waste ground. It is absent in Northern 

 France, Belgium, and Holland. In England it is found 

 as a weed of dry waste ground in the southern counties, 

 and is attributable, in some cases at least, to the intro- 

 duction of foreign grain. 



Bromus patulus, Mert. and Koch. Native in grassy 

 places in Southern Europe and Western Asia. Out- 

 side this region it is a weed of cultivation, or, as in 

 England, only a casual due to the grain trade. 



Bromus rigidus, Roth. A native of the Mediterranean 

 region on maritime sands and bare hills. It may be 

 native further north, as Mr. Lester records it as abun- 

 dant in sandy places in Jersey {Journal of Botany, 1901, 

 p. 64), but in England it has always been attributed to 

 grain introduction, imported agricultural seed, or ship's 

 ballast. 



Bromus SCOparius, L. A native of dry sandy places 

 in the Mediterranean region, where it is also a 

 common cornfield weed. It has been observed a 

 few times in England in connection with imported 

 grain. 



Bromus secalinus, L. Native of Mediterranean 



meadows. Widely spread in Britain, as well as the 



rest of Northern Europe and North America, as a 

 weed of cultivation. 



Bromus squarrosus, L. A casual introduction, pro- 

 bably with grain. It has been found in two or three 

 localities near large towns in Britain. Native in 

 Southern Europe and Western Asia. 



