THE FPLORA OF. THE: AKRROCH AR 
MOUNTAINS. 
By Joun R. LEE. 
(Read rst December, 1905.) 
For a considerable number of years past various members of 
the Andersonian Naturalists’ Society have both singly, and in 
groups of two or three, or sometimes larger parties, made 
excursions to the Arrochar district, for the purpose of investi- 
gating the botany of the mountains around the head of Loch 
Long. The results of these observations have, from time to time, 
been brought before the Society, and many interesting and 
valuable details regarding the occurrence of particular species on 
these hills have been obtained. The chief interest of the district 
lies in the fact that it forms the only truly alpine region of any 
considerable extent within the drainage area of the Clyde; and 
although the Arrochar hills do not attain an altitude comparable 
with that of the mountains lying to the north of Loch Lomond, 
still they are sufficiently high to yield examples of the typical 
Arctic vegetation found on the more lofty summits in Scotland, 
and may be said to be fairly representative of Scottish mountains 
in general as regards their characteristic flora. 
The present paper is an attempt to bring together the results of 
the observations hitherto made upon some of these hills, so far 
as they are sufficiently complete to be of value for future 
reference. As the information available with regard to some of 
the less accessible parts of the district is somewhat scanty, I have 
found it necessary to confine attention to a somewhat restricted 
area, and to adopt boundaries which, while fairly natural on the 
whole, are necessarily arbitrary and artificial at some points. 
The area which I propose to deal with exclusively in the 
present paper is that comprised within the following boundaries, 
viz.: On the south—the Glen Croe burn from its source to 
Loch Long, and the valley between Arrochar and Tarbet, 
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