87. FILICES. 283 



" Rocks on the south side of Blackford Hill, plentifully — 

 Mr. Brown." I presume this station to he truly the 

 Blackford Hill, near Edinhm-gh. On the north side of 

 Bocton Hill, Kent, according to Jacob, in ' Plantse Faver- 

 shamienses ', which is doubtless an error. In Orkney, 

 according to Lowe's List, and in Forfarshire, according to 

 G. Don ; not improbable habitats, but unverified. The 

 counties of Caernarvon (Mr. J. E. Bowman), Denbigh or 

 Caernarvon (Mr. Newman), York (Mr. Tofield — Mr. Back- 

 house), Northumberland or North Durham (Mr. E. C. 

 Atkinson — Mr. John Storey !), Westmoreland (Huds. 

 Ang.), Cumberland (H. C. Watson), Roxburgh (Rev. 

 James Duncan), Edinburgh (H. C. Watson, &c.), Perth 

 (Mr. Gardiner!), may ]3robably all be correct. Ascends 

 to the summit of Carnedd Llewelyn, according to Llwyd 

 quoted by Hudson, &c., which would give it an altitude of 

 1150 yards; but "summit" may likely mean the rocks 

 much below the actual and extreme top of the hill. 



>^>A. $"^0, 1402. SCOLOPENDEIUM VULGAEE, Sym. 



Area 1 2 3 4 5 6 7 8 9 10 11 13 13 14 15 16 1^ 18. 



South limit in Cornwall, Isle of Wight, Kent, 



North limit in Shetland, Orkney. 



Estimate of provinces 17. Estimate of counties 75. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 52 — 45. 



Native. Sylvestral, Rupestral. This fern affords a 

 very decided example of one prevalent condition of distri- 

 bution which may be traced in the greater number of 



