G8 85. CYPERACE.E. 



North limit in Shetland, Orkney, Hebrides. 



Estimate of provinces 18. Estimate of counties 80. 



Latitude 50 — 01. British t3^pe of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Eange of mean annual temperature 52 — 45. 



Native. Paludal, Lacustral. Some of the localities on 

 record for this species, in all probability belong to S. glau- 

 cus ; but there seems no reason to doubt its provincial 

 generality; nor to suppose much less than a comital gene- 

 rality also. Dr. Bromfield remarks that he has not found 

 this species in the Isle of Wight, " which possesses only 

 the next species or variety," S. glaucus of Smith. It will 

 be observed that neither the Isle of Wight nor the county 

 of Hants are mentioned above, in tracing the southern li- 

 mit of the species in England. In giving the southern 

 limits of English plants by counties, my usual rule has 

 been to take " Cornwall, Isle of Wight, Kent," as being 

 the three most southern counties, — west, midland, and 

 east, respectively, — by naming which a sort of line would 

 be traced across the South of England. But when a 

 southern species was unknown in the Isle of Wight, I 

 preferred to substitute " Dorset, Sussex," rather than 

 " Hants," for showing the southern limit. An obvious 

 reason for this preference will meet the eye of any geo- 

 grapher who looks on a map of England ; namely, that 

 Hants extends considerably farther northward than the 

 other two counties ; and that the two latter are thus bet- 

 ter adapted for indicating a southern Hne. I mention this 

 reason here, because Dr. Bromfield wrote to ask why 

 mainland Hampshire was not given (failing the Isle of 

 Wight) in indicating the southern lines of plants; and 

 other botanists might also suppose that the omission of 



