408 71. AMENTIFER.E. 



Salix petiolaris, Sm. 



Area [8 * * * * 13 * 15]. 



Incognit. I know not which of the British species of 

 Salix is intended by authors under this name. Dr. Lindley 

 says that the name does not belong to any British, or even 

 to any Eiu'opean species. (See Hooker's British Flora, p. 

 308, edit. 5). 



1028. Myrica Gale, Linn. 



Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17. 



South limit in Cornwall, Isle of Wight, Sussex. 



North limit in Caithness, Sutherland. 



Estimate of provinces 17. Estimate of counties 50. 



Latitude 50 — 59. British type of distribution. 



A. A. regions. Inferagrarian — Inferarctic zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 600 yards, in East Highlands. 



Range of mean annual temperature 52 — 40. 



Native. Ericetal, Uliginal. Rather too widely distri- 

 buted over England to allow of its being placed under the 

 boreal or Scottish type ; to which, nevertheless, its infre- 

 quency in the southern counties of England, compared with 

 its frequency on the mountains and moors of Scotland and 

 North England, brings it into near approximation. The 

 entire absence of the Myrica from the three groups consti- 

 tuting the province of the North Isles is remarkable ; be- 

 cause it seems adapted to humid situations, and will bear a 

 colder climate than that of the North Isles. More usually 

 the upper limit in Scotland is found at 450 to 500 yards, 

 though occasionally so high as 550 or even 600 yards. 



