78 ALIEN FLORA OF BRITAIN 



[Cotyledon Umbilicus, L. A species abundantly- 

 naturalised on walls and in hedge-banks in the west 

 of Britain, and seldom, if ever, recorded from any- 

 more natural habitat. In Devonshire, however, on the 

 borders of Dartmoor, I have frequently seen the species 

 growing on rocks on the open moor, and it is doubtless- 

 native in such situations there and elsewhere.] 



[Sedlini album, L. Native throughout the whole of 

 the Continent of Europe, up to the northern coast,, 

 but only known as an indigenous plant in England 

 in one or two localities, and even there doubted by 

 some botanists. There seems to be little cause, how- 

 ever, to doubt its native state in such situations as 

 are described by Mr. Murray in the Mendip Hills of 

 Somerset. As an escaped garden plant naturalised on 

 walls and roofs it is frequent throughout England.] 



Sedum Cepsea, L. Native of stony woods in Central 

 and Southern Europe. Once recorded as a garden, 

 escape in England. 



Sedum dasyphyllum, L. A native of Southern Europe,^ 

 extending as an introduced plant to North-West Europe,, 

 including Britain, where it is not uncommon on old 

 walls. 



Sedum hybridum, L. A native of Western Asia, long; 

 cultivated in gardens in England, and once or twice 

 recorded as a naturalised plant on walls. 



Sedum sexangulare, L. Native on rocks in the west 

 of Europe, reaching as far as Normandy and Belgium. 

 It has been recorded in several localities in England 



