THE LICHENS OF PERTHSHIRE 67 
ARTHONIACE. 
< “pte didyma Koerb. On the bark of trees. 88. Aberfeldy, 
Smit 
. gregaria Koerb. var. kermesina A. L. 8m. On bark. 89. 
Dunkeld, Smith, 210. 
. eccipienda Cromb. On bark. 88. Killin, Smith, 212. 
radiata Ach. On smooth bark. Frequent in all three vice- 
tice 
Var. Swartziana Sydow. 87. On young oaks, The Trossachs, 
1914. Abe erfoyle, in hedges. 88. Ben Lawers and Finlarig, 
Smith, 216. Woods near Kinloch Rannoch, 1910. Ferien: a 
Strath Dochart. 89. Strelitz Wood, near Cargill. 
A. punctiformis Ach. On smooth bark. 88. Glen Lochay 
(on hazel). 89. Strelitz Wood, near Cargill, 1914. 
: bah melaniera Léight. 89. Banks of the Garry, Blair Atholl, 
mith, 217. 
A. insinuata Stirt. On trees. 89. Near Killiecrankie, Stzrt. 
in Trans. Glasgow Soc. Nat. 1875, 
A. lapidicola Branth. & Rostr. On calcareous rocks. 88. 
Near summit of Ben Lawers, Jones & Carroll ex Carroll in J. Bot. 
1866, 24. Ben Lawers, at 3200 ft., 1911 
GRAPHIDACES, 
Lithographa tesserata Nyl. On rocks in mountain districts. 
Rare. 88. Ben Lawers, Cromb. tie heise, 95. 89. Summit of 
Cairn Gower, Cromb. in Grev. i. 170. 
Xylographa parallela Fr. On old fir palings. 87. Glen 
Falloch, Holl ex Cromb. Lichenes, 95. 88. Ben Lawers and Glen 
Lochay, Cromb. 89. Pass of Killiecrankie, Cromb..in Grev. i. 
; th, 2 
Var. pallens Nyl. 88. Ach ore, Glen Lochay and ee 
Smith, ob. 89. Bair Atholl ed) Pass of Killiecrankie, Cromb. e 
Leight. ed 
Mok" elliptica Nyl. 88. Achmore, Killin; Ben Lawers, 
Smith, 224. 89. Pass of Killiecrankie, Cromb. ex Leight. ed. 3, 391. 
X. laricicola Nyl. On the bark of larch trees. 88. On na single 
tree near its base in Lawers Glen, 1874, Cromb. in Grev. iii. 198. 
“It probably derives its greatest interest from being a purely 
corticole species, growing on the bark of living trees, a habitat 
h pha 
Ptychographa minora hiices N yl 88. On decorticated 
Melaspilea lentigino sula A. L. Sm. On trees. 87. On old 
pines, Glen Falloch, 1864, Carroll in J. Bot. 1866, 24. 88. Black 
Wood of Rannoch, Smith, 227. 
Opegrapha herpetica Ach. Ontr 89. Dunkeld, Smith, 230. 
*Var. subocellata Ach. 89. Near Blair Atholl, 1908. 
O. atra Pers. On trees. Fre “peers 87. Callander, Cromb. 
ex Leight. ed. 1, 375. Aberfoyle, 1914. 88. Finlarig Wood. 
Glen Dochart. 89. Blair Atholl, Cromb. loc. cit. Pitlochry and 
Dunkeld. 
