737 



"The contrast between the vegetation of the limestone and the ser- 

 pentine, was maintained equally in the yailahs and among the higher 

 mountains, and in the low country near the sea. In the latter we 

 found the sepentine in spring always indicated by the presence of 

 Senecio squalidus; a conspicious little Erophila, and the fern Chei- 

 lanthes odora, which occupied the place taken by the Acrostichum 

 lanuginosuvi on the limestone. Peculiar ^T^ecie^ oi Alyssum also dis- 

 tinguished the herbage of the two rocks. 



" In order to establish a comparison between the vegetation of the 

 serpentine and the limestone in the mountain region, two points were 

 selected, the one an isolated hill of serpentine, near Balbura, rising 

 about six hundred feet out of a plain, four thousand seven hundred 

 feet above the sea ; and the other, that portion of the peak of Cragus 

 corresponding in elevation. Every plant in flower was gathered on 

 each station, and such trees as were present noted. Both localities 

 were equally bare and rocky, and the herbaceous vegetation on each 

 consisted of little patches of plants growing in crevices of the rocks, 

 and was remarkable for presenting scarcely any grasses among the 

 species composing it. 



" On the serpentine at the Balbura station, we gathered forty-eight 

 species. They belonged to the following genera : — 



Ranunculus, 1 

 Alyssuiu, 1 (peculiar) 

 Thlaspi, 1 



Aienaiia, 1 (peculiar) 

 Stellaria, 1 

 Silene, 2 

 Crepis? I 

 Antliemis, I 

 Verbascum, 1 

 Arabis, 1 



Draba, 1 (peculiar) 

 Malcomia, 1 

 Polygala, 1 (peculiar) 



Erodium, 1 



Astragalus, 2 



Cylisus, 1 



Sanguisorba, 1 



Undetermined umbellifer, 1 



Cerastium, 2 



Paronychia, 1 



Thesium, 1 



Fedia, 1 



Viola, 1 (peculiar) 



Sedum, 1 



Cyclamen, 1 



Galium, 2 



Scorzonera, 1 

 Hieracium, 1 

 Senecio, 1 

 Ouosma, 1 

 Myosotis, 2 

 Polygonum, 1 

 Euphorbia, 1 (peculiar) 

 Berberis, 1 

 Juniperus, 2 

 Piaus, 1 

 Muscari, 2 

 Ornilhogalum, 1 

 A single grass and u feru 

 (Cheilanthes). 



"On the limestone station at Cragus we gathered forty-three species. 

 They belonged to the following genera : — 



Ranunculus, 2 

 Aubrietia, 1 

 Matthiola, 1 

 Thlaspi, I 



Brassica, 1 

 Draba, 2 

 Cochlearia, t 

 Arenaria, 1 



Galium, 1 

 Anthemis, 2 

 Ajuga, 1 

 Cliuopodium, 1 



