GIBRALTAR PLANTS. 119 



Carlina corymbosa, L. 

 C. hispanica, Lam. 

 Vulg. Cabeza de polio. 



Hab. Mediterranean region of Europe. North of 



Africa. 

 OBS Found on the neutral-ground and Spanish race-course. 



Atractylis cancellata. L. 



Hab. Mediterranean region of Europe. North of 



Africa. 

 OBS. Found on the middle parts of the rock. 



Centaurea pullata, L. 



Hab. Mediterranean region of Europe. Asia Minor. 

 North of Africa. 



OBS. This appears to be the form a. acaulis. The plant is nearly 

 procumbent ; the cauline leaves are not always lyrate. It is a 

 very common plant in Gibraltar and its neighbourhood. 



Centaurea calcitrapa, L. // 

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

 OBS. A very common species in Gibraltar and its neighbourhood. 



Centaurea polyacantha, Boiss. 



Boiss. tab. c. v., fig. A. 



C. tota hirtula, radice incrassata brevi, caule hu- 

 mili erecto subsimplici monocephalo, foliis radi- 

 calibus lyratis lobis dentatis terminali multo 

 majore dentibus mucronato-spinulosis,, caulinis 

 amplexicaulibus runcinato-pmnatifidis, squamis 

 in appendicem patulam fasciculato-spinosissi- 

 mam abeuntibus, spinis per 9 13 super pagi- 

 nam superiorem appendices eriiiacee dispositis, 



