374 70. URTICACE.E. 



reason for doubt, indeed, whether it can now be found in 

 every province as a really native tree, although published 

 localities and authorities might be adduced for every pro- 

 vince. 



985. Ulmhs suberosa, Ehrh. yU /^Jy/Z/.^P^ 



986. UlMUS CAMPESTRIS, Lilltl . 



987. Ulmus glabra, Mill. 



Area 1 2 3 4 5 6 7 8 9 10 11 * (13 14 15). 



South limit in Devon, Isle of Wight, Kent, ^^c^^*^'^- 



North limit in Northumberland. 



Estimate of provinces 11. Estimate of counties 40. 



Latitude 50 — 56. English type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 51 — 47. 



Native. Sylvestral, &c. The doubts mentioned under 

 the preceding species, Ulmus montana, might be repeated 

 here, and would be still more difficult to remove. In a 

 paper published in the Phytologist, iii. 36, Dr. Planchon 

 has placed all the reputedly British elms under two species, 

 montana and campestris, distinguished one from the other 

 by the position of the seed in the winged fruit. Besides 

 the three above named, 985 — 6 — 7, Dr. Planchon holds 

 the major, stricta, and caipinifolia, also as forms of U. cam- 

 pestris ; so that we may say, in adopting his views, every 

 British elm is U. campestris, — if it is not U. montana. 

 But supposing the views of Dr. Planchon to be quite cor- 

 rect with respect to the character afforded by the fruit, it 

 may still remain a question to be answered, whether the 

 two names, montana and campestris, represent single 



