226 12. CARYOPHYLLACE.E. 



190. Stellaeia cerastoides, Linn. 



Area ^ ^ ^ .^^ ^ -;)f ^ ^ .^te ^ .;^ .^ ^^ ^ 15 16. 



South limit in Perthshire and W. Inverness-shire. 



North limit in Aberdeenshire and Moray. 



Estimate of provinces 2. Estimate of counties 4. 



Latitude 56 — 58. Highland type of distribution. 



Arctic region. Superarctic zone. 



Descends to 900 yards, on Ben Nevis. 'i«. h^. ^4/ A. ^^^. 



Ascends to 1300 yards, on same group. 



Range of mean annual temperature 36 — 34. 



Native. Rupestral. Grows in wet gravelly spots on a 

 few of the loftiest mountains of the Highlands, on both sides 

 of the fifty-seventh parallel ; namely, on Ben Lawers, Ben 

 Nevis and its neighbour the Red Cairn, Cairngorum and 

 others adjacent thereto. In one spot only am I aware of 

 its growing so low as 900 yards ; namely, under the dark 

 rocks on the north side of Ben Lawers, from which the 

 snow-water trickles down to the spot occupied by this 

 Stellaria, and doubtless gives its station there a lower 

 summer temperature than the altitude might otherwise 

 imply. 



191. Cerastium aquaticum, Xmn. ^ r*i. f^/l^at 



Area 12345^789 10 (11) * [13 * 15*^ 18]. 

 South limit in Devon, Isle of Wight, Kent. At-*^**'^ 

 North limit in Yorkshire and Cheshire. 

 Estimate of provinces 10. Estimate of counties 40. 

 Latitude 50 — 55. English type of distribution. 

 Agrarian region. Inferagrarian — Midagrarian zones. 



