CRYPTOGAMIA. ALG. Lichen. B. (2) Crustaceous; 9 
with TUBERCLES. ; 
bable, andsily as he. observes, the plant in its oldest and «most 
weather-beaten state. ne 
Var. 6. Crust brown, changing to black. 
In this instance the black colour of the fructifications seems 
to extend itself over the otherwise brown crust. Tubercles 
gently convex, border brown black. ‘They are white within, 
and the crust greenish underneath, as inthe 5th variety. 
Found’ by Mr. Gr:rrrrx on stones and walls near Bettws 
mountain, and near Garthewin, Denbighshire. ‘2 
we 
ts ‘Tubereles very black, not bordered, crowded : crust caus’cens 
whitish “with a glaucous tinge, spreading, ‘rather, 
leaf-like at the edge. . 
hve Dicks... 5-E. Bot. 582—Dill. 18,17. A, - 
“Crust circular, 1 to 2 inches diameter, pressed to, hoary, 
wrinkled, lobed; ‘resembling small leaves. cohering together, 
sprinkled in the centre with mealy. globules. Saucers small, nu- 
—— in the centre, ‘the margin blunty of the colour of the disk. 
ing rarely found with saucers, it has been ‘supposed to belong 
to the L. pallescens. Dicxson. Has nothing in common with 
L. pallescens. Mr. Woopwarn. Crast adhering very closely 
to the bark of trees, and the sides of walls, in circular patches 
from } to 3 inches over, ash-coloured, wrinkled, less wrinkled in 
the centre, ‘rather leafy.at the.edge. Ditz. | 
Li. imcanus, Relh. n. 846. L. canescens, and L. canus of 
Gmelin Syst. veg. Under one name described as producing 
tubercles, under the other as bearing saucers, Mr, Dickson 
speaks of saucers, Mr. Relham of tubercles. My specimens are 
tubercled. It may prove one of those Lichens which occasion- 
ally bears the one or the other. ties At 
: Walls and trunks.of trees. fWaty common on old trees; but 
rarely in fructification. Mr. Woopwarp. About Garn, but 
chiefly on hawthorn. Mr. Gairrrru.] ith. 
L. Tubercles blackish, not bordered; crust bluish. ceeruleo- 
Dicks. b. s.-Hoffm. lich. 32. 3-F1, dan. 1064. 1. (not Dil], ™ gricans. 
82. 2, as in Lightf.) — SEE el 
Crust fixed to the earth, or to decayed. mosses, composed of 
whitish ash-coloured granulations. Tuberc/es very irregular in 
Ese jm ash-coloured when young and small, blackish when old. 
atellaria vesicularis. Hoftm. L. candidus. Weber, and Fl. 
dan. On the Highland rocks, but not common. LicutF. $05. 
[Norfolk and Suffolk. Mr. Woopw.]—s—t~St*é@=ts«sSJatt. Dec. 
L, Tubercles black, roundish, not bordered crust black. ni/ger. 
