180 86. GRAMINA. 



Ascends to 1300 yards, in East Highlands. 



Eange of mean annual temi)erature 52 — 33. 



Native. Ericetal. The highest station mentioned for 

 this species among my own notes is at 3700 feet ; hut Dr. 

 Dickie reports it at 3887 feet, and his higher elevation is 

 accordingly adopted ahove. Its narrower leaves and dif- 

 ferent aspect of the panicle usually suffice to prevent such 

 a mistake, but I have received this species under the name 

 of alpina, from an Edinburgh botanist, who had collected 

 it as such upon the Highland mountains. 



1303. AiRA CARYOPHYLLEA, Liun. 



Area general. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Shetland, Orkney, Sutherland. 



Estimate of provinces 18. Estimate of counties 82. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 450 yards, in East Highlands. 



Range of mean annual temperature 52 — 42. 



Native. Glareal, &c. Perhaps ascends into the infer- 

 arctic zone, as it runs quite up to the limits of cultivation 

 in several of the highland valleys. Though not observed 

 in the Hebrides, the full estimate of 82 counties is more 

 likely to be correct than any less number would be. The 

 species is said to be " common near Swanbister " in Ork- 

 ney, and "not rare" in Shetland; but it is absent from 

 the Faroe list. 



