FLORA OF ARROCHAR MOUNTAINS. 97 
POTENTILLA ANSERINA, L. 
Roadsides and borders of fields in the low ground, not 
ascending. 
SIBBALDIA PROCUMBENS, L. 
Alpine.—Found only at high elevations. Ben Narnain, 2,700 
feet ; Ben Vorlich, 3,000 feet. Plentiful on both these mountains, 
but hitherto not recorded elsewhere in the district. 
COMARUM PALUSTRE, L. 
Moist pastures in Glen Loin. 
ALCHEMILLA VULGARIS, L. 
Common, and ascending the hills to over 2,000 feet. Noted at 
2,700 feet on Ben Arthur. 
ALCHEMILLA ALPINA, L. 
Very abundant on the higher parts throughout the district, but 
_ not strictly alpine, as it descends as low as 650 feet on Crois. On 
_ the banks of Loch Sloy it is abundant, and on the slopes of Ben 
_ Vorlich above Loch Lomond it was noted at 700 feet. In dry, 
_ open situations it forms a dense carpet, to the exclusion of other 
_ plants, as on the top of Cruach Tarbet, where it is particularly 
; plentiful. This species occurs on the actual summits of all these 
hills, except that of Ben Ime, its highest altitude noted on that 
mountain being 3,000 feet. 
ROSA TOMENTOSA, Sm. 
Frequent. Low ground only. 
Rosa CANINA, L. 
All the varieties of dog-rose appear to be strictly lowland. The 
Pyrus AucuparRiaA, Ehrh. 
The rowan attains a higher altitude in the district than any other 
"tree, although, unlike the birch, it never forms woodland. When 
towing in association with other trees at a low elevation, or in 
ee gorges of the streams, it frequently attains considerable 
dimensions ; but at higher altitudes it is usually small and stunted. 
‘It ascends to 2,700 feet on Ben Arthur. 
B 
