71. AMENTIFERiE. 375 



species respectively, or whether they represent groups of 

 species. Some of the named forms would appear to be 

 varieties raised in cultivation, and to have no really indi- 

 genous representatives ; while one, U. glabra, would seem 

 to be represented by smooth-leaved examples of either 

 species. Hooker thinks only one species is indigenous in 

 Scotland, U. montana ; and great diversity of opinion on 

 the question of nativity is shown by the authors of local 

 floras and lists. The Botanical Society of Edinburgh 

 questions the nativity of any species of Ulmus within the 

 circle embraced by their Catalogue. AVinch deems U. 

 montana and suberosa indigenous in the province of Tyne, 

 and denies U. campestris being so. Henslow reverses this 

 with reference to Britain in general ; marking the U. sube- 

 rosa as not indigenous, and allowing campestris, with all 

 the others, except U. major, to be native. Babington dis- 

 cards only U. major from the native list. I suspect that 

 these authors knew but little about the indigenous elms, 

 and I cannot myself pretend to a much higher degree of 

 knowledge in the matter. 



988. QuERCUS RoBUR, 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, Kent. 

 North limit in Ross, Aberdeen, Western Inverness. 

 Estimate of provinces 17. Estimate of counties 75. 

 Latitude 50 — 58. British type of distribution. 

 Agrarian region. Inferagrarian — Superagrarian zones. 

 Descends to the coast level, in the Peninsula. 

 Ascends to 500 yards, in East Highlands (Dickie). 

 Range of mean annual temperature 52 — 42. 

 Native. Svlveslral, &c. The distribution, as above set 



