no ALIEN FLORA OF BRITAIN 



Centaurea nigrescens, Willd. Native of the meadows- 

 of Southern Europe. Once recorded as a casual in 

 waste ground near London. 



Centaurea salmantica, L. A native of Southerrt 

 Europe. Recorded once or twice as an introduction- 

 in England. 



Centaurea solstitialis, L. A native of the east of the 

 Mediterranean area in dry stony ground, and common 

 in the whole of Southern Europe as a weed of arable 

 land. It is of frequent occurrence in Southern England 

 among grain aliens and among crops raised from foreign 

 seed. 



Centaurea Verutum, L. A native of Asia Minor which 

 is cultivated in gardens in England. Recorded as a 

 casual in Cornwall. 



Chrysanthemum coronarium, L. A native of sea 

 sands and desert and rocky places in the Mediterranean 

 area, but much more common in cultivated land. It is- 

 rather frequently noticed in England, both as a grain- 

 sifting introduction and as a garden escape. 



Chrysanthemum Parthenium, Bernh. Indigenous 

 in the woods of Southern and South-East Europe^ 

 In the rest of Europe, including Britain, it is some- 

 times plentiful near gardens in which it has been 

 cultivated. 



Chrysanthemum segetum, L. It is rare as a native 

 plant, being only known from a few parts of the Medi- 

 terranean area in pastures. It is, however, a very 



