I70 ALIEN FLORA OF BRITAIN 



[Euphorbia exigua, L. Rather a common weed 

 of cultivated ground over the whole of Europe and 

 the Orient. In England it appears to be a native, at 

 least in Surrey, where it occurs (so Mr. Marshall tells 

 me) in newly cut copses and on sandy heaths, and, 

 as I have myself often observed, on the chalk downs. 

 These are the only records known from natural situations, 

 but perhaps further investigation will show the species 

 to have a wide native range.] 



Euphorbia helioscopia, L. A weed of cultivated 

 and waste ground over the whole of Europe, and 

 nowhere recorded in natural habitats. Mr. Reid's 

 discovery of its seeds in interglacial deposits in England 

 suggests that it may once have been native in Northern 

 Europe. 



[Euphorbia Lathyris, L. Native in stony woods in 

 Southern England, appearing after the brushwood is 

 cut. It is much more common, however, as a weed 

 of gardens, cultivated and waste ground, in Western 

 Europe — probably the result of its former extensive 

 cultivation.] 



Euphorbia Peplus, L. A weed of cultivated ground 

 throughout Europe. Common in England. 



Euphorbia platyphyllos, L. A weed of cultivated 

 and waste ground throughout Europe, but nowhere 

 throughout this area recorded as a native. Not common 

 in England. 



Euphorbia prostrata, Ait. A native of tropical and 

 sub-tropical America and Africa. Recorded by Mr, 



