69. EUPHORBIACE^. 357 



Estimate of provinces 18. Estimate of counlies 82. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 350 yards, in East Highlands. 



Range of mean annual temperature 52 — 43. 



Native. Agrestal. This species is not enumerated in 

 the list of Orkney plants ; but I have still ventured to give 

 the county estimate at the highest figure, the species being 

 reported " common " in Shetland, and having been ob- 

 served by myself in various places along the northern coast 

 of Caithness and Sutherland. It ascends to Castletown, 

 Aberdeenshire. Its present upper and northern limits 

 may, indeed, have been created by agricultural operations; 

 but there would be great difficulty in attempting to say 

 how far, or how high, it would have extended itself with- 

 out that adventitious condition of tillage to assist therein. 



■*?^ '^!>»"A^ 963. Euphorbia platyphyllos, Linn. 



Euphorbia stricta, Eng. Bot. 



Area 12 3 4 5*^,*^ (10 11). 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Cambridge, Northampton, Worcester. 



Estimate of provinces 5. Estimate of counties 20. 



Latitude 50—53. English type of distribution. 



Agrarian region. Inferagrarian zone. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 52 — 48. 



Colonist. Agrestal. Mr. Peter Inchbald reports (Phy- 

 tologist iii. 448) this species in Yorkshire, on arable land, 

 to which he considers it introduced with secd-coni. It 



