4 Bailey, Adventitious Vegetation oj Si. Arme' s-on-ihe-Sea. 



there is little difficulty in separating the two species ; 

 moreover, the authorities at Kew looked through a series 

 of more than twenty sheets of a full range of the plant, 

 and passed them all as S. juncea. Mr. Baker has also 

 seen an example or two, and considers the name correct. 

 The plant was not nearly as copious in the summer of 

 1909, but I have little doubt of its having been established 

 at St. Anne's throughout the seven years of my residence 

 there, but passed over for 5. nigra. 



Eruca sativa, Lam., — an Iberian, southern French, 

 Italian, Croatian, and Greek species — was a frequent alien 

 throughout 1908, but was greatly reduced in numbers the 

 following summer. 



Lepidium virginiannm, Linn. This American cress 

 was occasionally met with. 



Neslia panicnlata, Desv., a common European plant, 

 was represented on the sandhills, and was quite typical. 



Myagrwn perfoliatum, Linn. Three or four of this 

 widely distributed European species were collected. 



Rapistrum Linneamun, Boiss. et Reut., a plant of the 

 Iberian peninsula and of Greece, was one of the striking 

 plants of the sandhills in 1907; it owed its preservation 

 up to the fruiting stage to its growing in dense masses of 

 Sinapis nigra. One plant furnished sufficient material 

 for ninety herbarium specimens, and another sixty-five. 

 This species makes the fifteenth belonging to the 

 Cr7icifercB. 



Saponaria Vaccaria, Linn. — a frequent cornfield plant 

 of Britain furnished a few examples on the poultry area. 



