GIBRALTAR PLANTS. 157 



Ophrys apifera, Huds. 

 Vulg. Flor de la abeja. 



Hab. Britain, Middle and South of Europe. North of 

 Africa. 



Ophrys lutea, Cavan. 

 O. vespifera, Brot. 



Hab. Mediterranean region of Europe. North of 

 Africa. 



Ophrys tenthredinifera, Willd. 



Hab. Portugal, Spain, Greece, Italy. North of Africa. 

 OBS. Communicated. 



Peristylus cordatus, Lindl. 

 Orchis cordata, Willd. 



Hab. South of Europe. Madeira. Canary Isles. 

 OBS. Communicated by Dr. Lemann. 



Neottia spiralis, Sw. 



Spiranthes autumnalis, Rich. 

 Hab. Europe, Britain. 



OBS. Communicated by Dr. Lemann. 



BROMELIACEyE, Juss. 



Agave americana, L. 

 Aloe americana, Clus. 

 Vulg. Pita. 

 Hab. Tropical America. 



OBS. Planted extensively over the rock, where it grows in great 

 perfection, forming good barricades, and, when in flower, 



