338 63. POLVGONACE.E. 



North limit in Shetland, Orkney, Hebrides. 



Estimate of provinces 18. Estimate of counties 82. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 450 yards, in the East Highlands. 



Range of mean annual temperature 52 — 42. 



Native. Agrestal, Glareal, &c. A very common spe- 

 cies in Britain, and varying greatly in its diflferent situa- 

 tions of growth. 



940* Polygonum Raii, Bah. >4 ^/y^/,. ^a 



Area 1 2 * 4 * 6 7 * | * * 12 13 * 15 16 * 18. 



South limit in Cornwall, Isle of Wight, ? 



North limit in Shetland, ? 



Estimate of provinces — ? Estimate of counties — ? 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends, at the coast level, to the North Isles. 



Range of mean annual temperature 52 — 45. 



Native. Littoral. The distribution of this species is 

 yet imperfectly ascertained, the plant having only of late 

 years attracted the attention of modern British botanists, 

 as a species distinct from P. aviculare. Very few of its 

 localities, hitherto recorded, are situate on the eastern 

 coast of Britain ; namely, those in Forfarshire (Flo. Forf.) 

 and Norfolk (Mr. J. E. Moxon), both of which may be 

 deemed to require confirmation, although not so unlikely 

 as to warrant their rejection here. It has also been re- 

 ported from Hants, Dorset, Devon, Glamorgan, Pembroke, 

 Merioneth, Caernarvon, Anglesea, Isle of Man, Wigton, 



