66 THE LICHENS OF PERTHSHIRE 
rocks and walls, ascending to 3900 ft., or higher, on Ben Lawers.. 
Frequent i in all three vice-counties, as also are 6 the forms urceolatum 
and contiqua 
Var. atrovirens Koerb. 88. Amulree, Lindsay ex Leight. 
ed. 1, 347. Ben Chalum and Loch Laidon. 89. Dunkeld, 
Lindsay. Ben-y- ust: Smith, 192. Ben Vrackie, 1912. 
Var ~eae rama Floerke. 88. Ben Lawers, Lindsay ex 
Leight. ‘ed. 1 
R. hateuresitt Th. Fr. On rocks, preferring those which are 
calcareous. 88. Ben Lawers, Jones ex Mudd, 308. Craig Tul- 
loch, Smith, 194. Creag-na-Caillich, at 2400 ft.,1905. 89. Ben- 
y-Gloe, Smith, 2b. 
. petreum Mass. (Lecidea concentrica Base On rocks. 
87. Gien Falloch ; Loch Voil; Pass of Leny, 1912. 88. Glen 
Lochay, Smith, 194, Crianlarich, Killin, and Fearnan. South- 
east side of Loch Earn. 89. Pitlochry. 
ar. excentricum A. L. Sm. 88. Ben Lawers, Holl ex Leight. 
ed. 1, 350. We found it there on ese cairn at 3990 ft. in 1913. 
Tyndrum and Ben Chalum. Falls of Lochay. 
FR. confervoides DC. (Lecidea piosa Leight.). On rocks. 
Common in all three Ms Ste s from near sea-level up to 
aes ft. or higher on Ben Lawe 
Form fuscescens Leight. 87. Glen Devon. 88. By the River 
Tummel, 1912. 
postumum Th. Fr. On alpine rocks. 87. Ben-a-Chroin, 
2700-3000 ft. 88. Ben Lawers, Smith, 196. Ben Chalum, at 
3300 ft., and Am Binnein, at 3820 ft 
R. obscuratum Massal. On partie in mountain districts, ascend- 
ing to 3900 ft. on Ben Lawers. 88. Ben Lawers!, Cromb. ex 
Leight. ed. 3, 377. Meall Chuirn, both the type and form ferrata 
Loch Earn, 1914. 
rts lavatum Ach. 87. Near Aberfoyle. 88. Glen Lochay, 
fi. plicatile A. L, Sm. On alpine rocks. 88. Ben Lawers, 
Stirt. se Leight. ed. 3, 380. 
L tum peztzordeum Koerb. Encrusting mosses on rocks, 
more hie on ees in alpine situations. 87. eave Chroin, at 
2800 ft. . Ben Lawers, 1861, Jones & Cromb. ex Cromb. 
Lichenes, = we g-na-Cailli ch, Crom. Rocks eas Lochan- 
isi amongs t Andreae, at 2800 ft 
L. fuscolutewm Mudd, Senile: Behe as to the preceding. 
88. Ben Lawers, Dickson in Fasc. 2, 18. Breadalbane, 1782, 
et North side of ibe Tay es Creag-na-Oaillich, Smith, 199. 
L. fecundum Th. On dead mosses amongst alpine rocks. 
88. Summit of Creag- na-Caillich, ae in J. Bot. 1882, ae 
LECANACTACES. 
Lecanactis Dilleniana Koerb. On subalpine rocks. 87. The 
Trossachs, Cromb. Lichenes, 90. 
