62 THE LICHENS OF PERTHSHIRE 
B. subnigrata A. L. Sm. On schistose rocks, ascending to 
2800 ft. on Ben Lawers. 88. Ben Lawers! and Crianlarich, 
Holl ex Leight. ed. 1, 317, Craig Tulloch, Cron 2. 
. premnea A. L. Sm. On trunks oftrees. 87. Glen Falloch, 
Smith, 123. 88. Kenmore, Holl ex Leight. ed. 1, 311. Finlarig 
and Glen Lochay! Cromb. Kinloch Rannoch. 89. Glen Tilt, 
1912 
B. pulverea Mudd. On trunks of old trees, ae! near the 
roots. 87. Glen Falloch, Holl ex Leight. ed. 1, 322. 88. Aber- 
feldy, Holl ex Cromb. Lichene s, 89. Glen Lochay, Smith, 1 124. 
. Lightfootii Mudd. On the smooth bark of trees. 88. Trees 
by Loch Tay, near Fearnan, 1911. 
B. lenticularis Koerb. On rocks. 88. Craig Tulloch, Cromb. 
89. Glack Mill Dam, Dunkeld. 
Form nigricans Arnold. 88. Bank of the topes Killin, 1913. 
Var. erubescens Koerb. 88. Craig Tulloch, Sm e . 
B. rhypodiza A -L.Sm. On alpine schistose ict . Sum- 
mit of ew 2 -na- Caillich, Cromb. in Grev. x. 23. 
B.chalybeia Mudd. On siliceous ieee fe and stones. 88. Ben 
Lawers, Crome. Lichenes, 91. 89. On stones, King’s Seat, Sidlaw 
Hills, 1914 
B. contristans A. L. Sm. On decaying mosses in mountain 
districts. 87. On Andreea, Glen =r at 1000 ft., 1913. 
88. ‘‘ Abundant on mosses near summit of Ben Lawers, 1864,” 
pho & Jones in J. Bot. 1867, 255. Ben Laoigh, at 3000 it., 
Wat 
sie confust or A. Sm. On mica-schist rock. 88. Craig 
— Cromb, in “et iii 24, Meall-nan-Tarmachan, at 2700 ft., 
Wat. 
B. oss aA.L. Sm. Parasitic the thallus of Lecanora 
calcarea. 8. Craig Tulloch, Smith, 1 
*B. cristata A. L. Sm. Parasitic on ae ym of Lecanora 
subcarnea. 89. Glen Tilt, 1912. We have seen no specimens of 
into small scales around which the Biatorina clusters. The older 
apothecia are proliferous, occasionally in three tiers, which may 
have phe eis the name to Leighton. The spores of our plant 
sero 66 x 3p. 
B. epiblastematica A. L. Sm. Parasitic on the thallus of 
species of Peltigera and on Solorina saccata. 88. Glen Lyon, 
Cromb. ex Leight. ed. 3, 388. Cr reag-na-Caillich, Smith, 132. 
Near the summit of Ben Lawers, Cromb. in J. Bot. 1882, 275. 
Bilimbia aromatica Jatta. On soil amongst calcareous rocks, 
and on the mortar of walls. 88. Crai a Tulloch, Cromb. ex Leight. 
ed. 3, 352. Ben Lawers, Smith, 134 
Var. hypsophila Nyl. 88. Ben Lawers, Jones ex Cromb. 
ps 78. 
B. carbonacea Jatta. On ee rocks. 88. Ben Lawers, 
Smith, 134, 
