44. COMPOSIT.E. 47 



Outer Hebrides ; but the Shetland Flora enumerates both 

 of the species. I have a note of " S. oleraceus" seen just 

 above Castletown, m Aberdeenshire, in 1832; though I 

 cannot now say certainly that it was not S. asper which 

 was observed there in that year. 



562. SoNCHUs ALPiNUS, Limi. 



Area * ^^ .* ^ * * * * * ^ [11] * ^ ^ 15. 



South limit in Forfarshire. 



North limit in Aberdeenshii'e. 



Estimate of provinces 1. Estimate of counties 2. 



Latitude 5Q — 57. Highland type of distribution. 



Ai'ctic region. Midarctic zone. 



Descends to 700 or 750 yards, in East Highlands. 



Ascends to 950 yards, in same province. 



Range of mean annual temperature 40 — 37. 



Native. Rupestral. Very local ; being restricted to a 

 few rocky spots on the range of mountains about the line 

 of union between Forfar and Aberdeen shires. Probably 

 the browsing of sheep and deer, with the frequent visits of 

 botanists, are the operative causes for this very restricted 

 area and the scarcity of the individual plants. It is re- 

 ported to have been found in Northumberland, although 

 only on authority which cannot be safely relied upon. 



563. Crepis virens, Linn. 



Area general. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Orkney, Hebrides. 



Estimate of provinces 18. Estimate of counties 81. 



