25. ONAGRACE^. 369 



700 yards of altitude, though occurring at 2600 feet, if not 

 upwards, in Cumberland, and rather above that altitude in 

 Forfarshire. In these elevated spots, it is a slender-stemmed 

 shrub, growing from the crevices of rocks. On Loch na 

 Garr, in Aberdeenshire, there are trees of two feet in girth, 

 at 600 yards of altitude above the sea level. 



Pyrus domestica, Sm. 



Area [12 3 (.5) 8]. 



Alien. Reported to grow in Cornwall, Devon, Hants, 

 Worcestershire, Leicestershire and the Metropolitan circuit. 

 But all the alleged habitats appear to have originated in 

 errors, with the exception of one in Wyre Forest, on the 

 borders of Worcestershire, in which Mr. Lees has intimated 

 that only a single and very aged tree exists. (See Supple- 

 ment to the New Botanist's Guide.) It may be difficult to 

 explain how the one tree came to its habitat ; but we can- 

 not hold the species native on the faith of a single tree. 



367. Epilobium angustifolium, Linn. 



Area, general. 



South limit in Dorset, Isle of Wight, Kent. 

 North limit in Shetland, Orkney, Sutherland. 

 Estimate of provinces 18. Estimate of counties 70. 

 Latitude 50 — 6L British type of distribution. 

 A. A. regions. Inferagrarian — Midarctic zones. 

 Descends to the coast level, in*rhames province. 

 Ascends to 850 yards, or upwards, in East Highlands. 

 Range of mean annual temperature 50 — 39. 

 Native. Sylvestral, Rupestral, &c. Not a common or 



3 B 



