GIBRALTAR PLANTS. 79 



OBS. M. Boissier makes this species only a variety of the former ; 

 and indeed it is difficult to find characters sufficiently marked 

 to separate one from the other. The second species is more 

 numerous on the little sandy desert between the neutral-ground 

 and foot of Queen of Spain's Chair. It is also found with the 

 other species on the sandy hills near Catalan-hay. 



Matthiola tricuspidata, R. Br. 

 Hab. Mediterranean shores, &c. 



Hesperis matronalis, Lam. 



Var. sylvestris, De C. 

 Hab. Europe. 



OBS. Bare. Communicated by Dr. Lemann. 



Cardamine hirsuta, L. ^<~c-/Un, /^zv^z. 



Hab. Europe Britain. North Africa. Persia. 

 Brassica papillaris, Boiss. 



Hab. Portugal, Spain. 



OBS. This is a new species described by Boissier. (See Ap- 

 pendix). Found on the neutral-ground. 



Brassica Sinapistrum, Boiss. 

 Sinapis arvensis, L. 



Hab. Europe, Canary Isles. 

 Sinapis incana, L. 



Hab. Germany, Britain, France. Canary Isles. 

 Sinapis alba, L. 



Hab. Germany, England. Asia Minor. Canary Isles. 

 Rapistrum rugosum, Mcench. 



Hab. Italy, Germany. Canaries. 



