GIBRALTAR PLANTS. 149 



Euphorbia esula, L. 



Hab. Britain, South of Spain, Denmark, Germany, &c. 

 OBS. Enumerated by Von Martius. 



Euphorbia paralias, L. 



Hab. Britain, Mediterranean region of Europe, North 

 of Africa. Canary Isles. 



OBS. Rare on the neutral-ground, but abundant on the sands 

 beyond it. 



Euphorbia provincialis, Willd. 



Var. retusa. Folia inferiora retusa aut emargi- 

 nata. 



E. heteraphylla, Desf. 

 Hab. Mediterranean shores. Teneriffe. North of Africa. 



Euphorbia peplis, L. 



Hab. Britain, South of Europe. North of Africa. 

 Canaries. 



OBS. A very common species. 



Euphorbia serrata, L, 



Hab. South of Europe. Egypt. North of Africa. 

 OBS. Rare in Gibraltar. 



Euphorbia medicaginea, Boiss. 

 Boiss., tab. clxii. 



E. annua, glabra, caule erecto, foliis linearibus 

 aut lanceolato-cimeatis saepe etiain obcordatis 



