SOUTH WESTERN PARTS OF EUROPE. 6l 



here in their favourite situation. The following 

 may serve as the foundation of a more complete 

 botanical view of this country. 



The chain of the Gerez mountains in North 

 Portugal, is high, well watered, and shady, where 

 Quercus Robur and Q^pubescens Willd. with the 

 olive, grow in the greatest abundance. In the more 

 elevated regions the birch, yew, and Sorbus 

 aucuparia are found, and on the banks of the riven 

 Rhamnus Frangula. The underwood is Erica 

 arborea, Prunus lusitanica and Arbutus Uncdo. 

 The still higher, and especially the shady parts, 

 are full of plants of North Europe ; which, 

 mixed with the Portuguese plants, ascend to con- 

 siderable heights ; hence an extraordinary medley 

 is produced. Thus upon one of the highest levels 

 are found Scirpus exspitosus, Nardus stricta, along 

 with Betula alba, Scrophularia sambucifolia, &c. 

 The middle regions abound in Cytisi, Genista?, 

 Spartia, of which only Genista alba Lam. is 

 known ; on lower mountains several Cisti espe- 

 cially C. hirsutus Lam. C. scabrosus II. Kew. C. 

 cheiranthoides are common. 



