62 ALIEN FLORA OF BRITAIN 



Ononis Natrix, L. Native of sandy shores in Southern 

 Europe, and recorded at Cardiff as a ships' ballast intro- 

 duction. 



Omithopus compressus, L. Very common on the 

 shores and sandy pastures of some parts of the Mediter- 

 ranean area, spreading also to cultivated fields as far 

 north as Central Europe. In England it has been 

 recorded a few times as a grain introduction. 



[Ornithopus ebracteatus, Brot. Native of dry, rocky, 

 and sandy places, from the Mediterranean area to the 

 north of the Continent and the Scilly Islands. Elsewhere 

 in England it has only been recorded as a very rare 

 casual.] 



Fisum sativum, L. A mere relic of cultivation in 

 Britain. In the south of Europe it becomes a sub- 

 spontaneous cornfield weed. Its native country is 

 not known. 



Robinia Pseudacacia, L. A native of North America, 

 much planted in England, and sometimes having a 

 wild appearance. 



Scorpiurus subvillosus, L. A very common weed of 

 cultivated and waste ground in some parts of the 

 Mediterranean area. It has been recorded several times 

 as a wool casual in Britain. 



Spartium junceum, L. Native of woods and bushy 

 places in Central and Southern Europe, once recorded 

 on the seashore at Hythe ; doubtless an escape from 

 cultivation. 



