110 44. COMPOSURE. 



TussiLAGO ALPINA, Linn. 



Area [15]. 



Incognit. Included, like so many other dubious plants, 

 among G. Don's discoveries in Forfarshire ; but no other 

 botanist appears to have found it in Britain. Mr. Gardiner 

 suggests that Don intende d Erigeron alpinus ; but it is dif- 

 ficult to conceive a mistake between plants so veiy dissimi- 

 lar. Homogyne alpina of some authors. 



638. Erigeeon alpinus, Linn. 



Area **************! 5. 



South limit in Perth, Forfar. 



North limit in same counties, — or Aberdeen ? 



Estimate of provinces 1. Estimate of counties 3. 



Latitude 56 — 57. Highland type of distribution. 



Arctic region. Midarctic zone. 



Descends to 800 or 850 yards, in East Highlands. 



Ascends to 850 or 900 yards, in same province. 



Range of mean annual temperature 38 — 37. 



Native. Rupestral. Very local ; occumng on Ben 

 Lawers, in Perthshire, and in Glens Dole and Canlochen, 

 in Forfarshire. I have an indistinct recollection of seeing 

 it in Aberdeenshire, either about the rocks above Loch 

 Callater, or somewhere on the Ben-na-Buird range. 



639. Erigeron acris, Linn. /^ />^ ^^^X^ ^i'^a 



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

 South limit in Dorset, Isle of Wight, Kent. 



