364 69. EUPHORBIACE.E. 



Latitude 50—59. 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. The name of this species appears in 

 a list of plants which I observed near Reay, on the north 

 coast of Caithness ; which is the only record in my posses- 

 sion to show that the species occurs to the northwai'd or 

 westward of the Caledonian Canal. Said to be frequent, 

 though perhaps introduced, in Moray ; common about Al- 

 vah and Aberdeen, and in Forfarshire. In 1832 I observed 

 it at Castletown, in Braemar, Aberdeenshire, over 1000 feet 

 of elevation ; but the name does not appear in any other of 

 my lists of plants noticed in the Highland counties, except 

 those which relate to tracts at or near the coast level. 

 Perhaps the county estimate might have been raised to 80; 

 but more full or more exact information is still required re- 

 specting the existence of this species in the North High- 

 lands and North Isles. 



i 



973. Euphorbia Lathyris, Linn. ^ ^'^•^^* /'■9'tS 



Area (1 2 3 4 5 * * * * 10 11 ^ 13 * 15). 



Alien. Some botanists regard this as a "really wild" or 

 " truly wild " plant in thickets in the south of England ; for 

 example, it is so regarded by Mr. Borrer and by the au- 

 thors of the Flora Hertfordiensis. It veiy readily and per- 

 tinaciously propagates itself, in a weed-like manner, in 

 gardens ; but it is naturally and usually a biennial, and as 

 such, it is adapted to a warmer climate than that of the in- 

 land counties of England. 



