64 44. COMPOSIT.E. 



581. HiERACiUM BOREALE, Fries. 



Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16. 



South limit in Devon, Isle of Wight, Kent. 



North limit in Banff, Aberdeen, Argyle. 



Estimate of provinces 16. Estimate of counties 70. 



Latitude 50 — 58. British type of distribution. 



Agrarian region. Inferagi'arian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 150 or 200 yards, in East Highlands. 



Range of mean annual temperature 51 — 46. 



Native. Sylvestral, Septal. It would appear from the 

 habitats and localities published for this species, under 

 name of subaudum (Smith) or boreale, that it prevails more 

 in England than in Scotland, and finds comparatively an 

 early northern Umit. Thus, notwithstanding the name, its 

 geographic type is rather austral or English, than boreal or 

 Scottish, so far as Britain is concerned. And by the show- 

 ing of Fries, too, it would seem to be more of a southern 

 than a northern species in Scandinavia. 



582. HiERACiUM TRIDENTATUM, Fries. 



583. HiERACiUM RIGIDUM, Fvies. 



Area 1 2 3 * 5 * 7 * * 10 11 12 13 * 15 16 17. 



South limit in Somerset, Sussex, Surrey. 



North limit in Ross, Forfar, Dumbaitou. 



Estimate of provinces 15. Estimate of counties 50. 



Latitude 50 — 58. British (?) type of distribution. 



Agrarian region. Inferagi-arian — Superagrarian zones. 



Descends to the coast level, or nearly so, in S. England. 



