44. COMPOSIT,K. 113 



the extreme limit of the Calluna, on the central Grampians, 

 and 150 yards higher than that shrub, on Ben Hope, in 

 Sutherland, it seems properly refeiTed to the superarctic 

 zone. 



643. Senecio vulgaris, Linn. 



Area general. 



South limit in Corawall, Isle of Wight, Kent. 



North limit hi Shetland, Orkney, Hebrides. 



Estimate of provinces 18. Estimate of counties 82. 



Latitude 50—61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zone. 



Descends to the coast level, in the Peninsula. 



Ascends to 400 yards, in East Highlands. 



Range of mean annual temperature 52 — 42. 



Native. Agrestal. One of the very commonest species 

 in the cultivated lands of Britain ; and it may serve to il- 

 lustrate the incompleteness of our county Hsts of common 

 plants, when I mention that there are still twenty counties, 

 or a fourth of the whole number, in reference to which I am 

 unable to adduce any botanical authority for the occurrence 

 of the vulgar Groundsel within them. It was chiefly on ac- 

 count of the deficiencies in our records of the commoner 

 species, that I was induced to found a census upon an 

 " estimate " of provinces and counties, rather than upon 

 the number actually ascertained and recorded. 



/^/i^ 



, ^ 644. Senecio sylvaticus, 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. 



VOL. 11. I 



