85. CYPERACEiE. 113 



(Phjiiologist, iii. 3^2) it extends over a space of more than 

 half a mile, on the summit of Hartfell ; and as it also 

 occurs on the summit of CheA-iot (ISIr. Winch), we have 

 two stations very near, if neither of them is partially 

 within, the East Lowland province. Perhaps C. rigida 

 should be considered as extending do^Tiwards into the 

 inferarctic zone, although but seldom and slightly within 

 it. In Shetland, it may occur as low as 400 yards, unless 

 C. vulgaris has been misnamed C. rigida there^ It has 

 been said to occur in the Peninsula, no part of which 

 rises above the agrarian region ; but the alleged locality 

 requires verification. 



1230. Carex aquatilis, Wa)il. 



Area ^^^iujif*********!^. 



South limit in Forfar. 



North limit in Aberdeen. 



Estimate of provinces 1. Estimate of counties 2. 



Latitude 56—58. Highland tji^e of distribution. 



A. A. regions. Superagrarian — Midarctic zones. 



Descends to 300 or 250 yards, in East Highlands. 



Ascends to 1100 yards, in the same province. 



Eange of mean annual temperature 44 — 36. 



Native. Paludal. Found chiefly on and near the table 

 land of the eastern Grampians, where the counties of For- 

 far and Aberdeen meet, at 800 to 1000 yards of altitude. 

 It is said also to occur at a much lower elevation; 

 namely, " on the banks of the South Esk, about half way 

 up Glen Clova, and at a short distance below the Inn" 

 (Flora of Forfarshire). This is within the region of cul- 

 tivation, and perhaps below 300 yards of absohite height. 



VOL. lU. Q 



