$6 ON THE BOTANICAL GEOGRAPHY OF THE 



Portugal has three Floras, that of the South, 

 that of the middle country, and that of the North. 

 The countries near the Tagus, and upon the 

 South side of this river belong to the first, with 

 the exception, as usual, of some high mountains, 

 This tract of land, not being separated by any 

 natural boundaries from Andalusia, has many plants 

 in common with it, as might be expected ; hut, on 

 the other hand, not so many by far with the middle 

 of Spain, and still fewer with the South of France. 

 Only Sicily and the most southern parts of Provence 

 bear some, though not a very strong, resemblance 

 to these tracts in their vegetable productions. The 

 Floras of Andalusia and the South of Portugal 

 are those that resemble the most that of the coast 

 of Barbary. — Here are some instances of plants, 

 which formerly were thought peculiar to the North 

 of Africa, but which are also found in the southern 

 parts of Portugal and vice versa: Scirpus pu- 

 bescensDESFONT.Fl. Atl., Iris-alata Lam. Festuca 

 phleoides Desf. Stipa paleacea Vahl, Thymus 

 Cephalotes, Phelypea lutea Desf. Urtica caudata 

 Vahl. Cynoglossum pictum Vahl, C.clandestinuin 



