232 12. CARYOPHYLLACE^. 



really the present species, and not C. latifolium, the des- 

 cending range of altitude may be brought down to 500 

 yards, or little more. I presume also that the locality of 

 the Khoil, near Ballater, Aberdeenshire, on which C. lati- 

 folium has been stated to grow, must belong to the pre- 

 sent species, which also gives it an altitude below 600 

 yards ; and in doing so, may be considered to elevate its 

 range of temperature up to 40 or 41. Attains the summit 

 of Ben Lawers, which exceeds 1300 yards. The summit 

 of the Khoil may be within the Inferarctic zone. The 

 county of Lincoln, on the authority of Martyn, must be 

 erroneous. 



197. Cerastium latifolium, Linn. 



Area * .^u * ^ -^j * 7 ^j. ****** 15 16 17 [18]. 



South limit in Caernarvonshire. 



North limit in Sutherland. 



Estimate of provinces 4. Estimate of counties 8. 



Latitude 53 — 59. Highland type of distribution. 



Arctic region. Superarctic zone. 



Descends to 1000 yards, in West Highlands. 



Ascends to 1200 or 1250 yards, in the same province. 



Range of mean annual temperature 37 — 34. 



Native. Rupestral. On wet rocks and stony places 

 upon the loftiest hills of the Highlands, and on Snowdon, 

 in Wales. The frequent confusion of this and C. alpinum 

 throws much uncertainty upon the alleged localities of the 

 present, far less frequent, species. It certainly occurs in 

 Caernarvonshire, Perthshire, Inverness- shire, on the con- 

 fines of Moray and Aberdeenshire, and in Sutherland. It 

 is reported also from Stirling, Argyle, Forfar, Orkney, and 

 Shetland, I suspect that tlie species of Orkney is C. alpi- 



