GIBRALTAR PLANTS. 147 



OBS. Found in great abundance about the middle third of the 

 rock, above the Alameda. It is seen in flower even as late as 

 September, and part of October. 



SANTALACEJE, R. Br. 



Osyris alba, L. 



Vulg. Retama loco. 



Hab. South of Europe. North of Africa. Levant. 

 OBS. Communicated by Dr. Lemann. 



Thesium humile, Vahl. 



Hab. Spain, Sardinia, Sicily, Greece. North of Africa. 

 OBS. Communicated by Dr. Lemann. 



ARISTOLOCHIE^l, Jms. 



Aristolochia longa, L. 



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



Aristolochia glauca, Desf. 

 A. bcetica, L. 

 Vulg. Balsimina. 



Hab. Spain, Portugal. Barbary. 



OBS. Generally found entwining itself among the leaves of the 

 Chamserops humilis and Rharanus oleoides. The A. rotun- 

 da is said to grow in Gibraltar, but I have not been able to 

 identify it. 



EUPHORBIACE^E, Jim. 



Ricinus communis, L. 



Vulg. Higuera de infierno. 



L 2 



