GRYPTOGAMIA, ALG#. Lichen. C. Crustaceous, 27 
tiled, spreading, fixed. : 
with farinaceous crusts become foliaceous, and that probably 
the L. candelarius, concolor, parietinus, and flavicans may be 
all the same plant under different circumstances, ie 
Rocks, walls, trunks of trees, old boards, and old pales. 
: , . P. Jan.—Dec, 
Cc. Crass. ‘tiled, spreading, Jixed. 
L, Tubercles brown. black, with whitish borders whenleucophe’us 
ing: crust brownish ash-coloured, tiled, . rather 
lated than leafy, : 
Fl. dan. 955, 2—Dill. 82. 2. 
Composed entirely of granulated particles of a greyish blue 
colour, out of which rise a few tubercles, flat, flefhy, light 
reddish colour when fresh, blackish when dry. ‘The under side 
of the crust is black, spongy, and like as if it had been burnt,. 
Dit. The plant of the Fl. dan. and that of Dillenius are here 
given as the same, on the authority of Mr. Dickson, but the 
characters as given by Vahl and Dills do not quite coincide. 
On rocks thinly covered with soil, in the Highlands, [Sum- 
mit of Carnedd Llewelyn. Mr. Grirrita. Stone fences in 
Cornwall, frequent, ] 
£E. Saucers brown black; border pale brown ; leaves obscu’rus. 
__ darker brown, strap-shaped, many-cleft, the ends 
bent down, 
Dicks. bh. s.—Dill. 24, 60—Hoffm. lich. 32. 2-Mich, 51. 6. 
_ Saucers very numerous, and frequently so crowded as to de- 
form one another, borders thick. Tubercles besides, of the 
same colour as the leaves. Mr. Woopwarp. Leaves cut into 
very ape segments, smooth, with numerous black fibres un- 
meath, Dit. ; 
CL. pullus. Lightf. 895, L, fufeus. Huds. 533, Rocks and 
larger stones near Bangor and other places in Wales, Westmore- 
land, and Scotland. [Rocks in Pengwern Frith, above the road 
leading from Llansannan to Llanutydd, in Denbighshire. Mr. 
Gairrirn. | 
L. Tubercles black: leaves brownish , white under- lu’ridus. 
_ Meath, minute, thick, indented. ey 
#1. dan, 1064, 2~Mich. 54, ord. 36, 4—Dill. 30, 134. 
Tubercles rather hollowed at the top. Leaves thick, fleshy, 
concave, tiled; sometimes lobed. Dillenius had not scen this 
plant; his figure is taken from that of Micheli, the fructifica- 
tion in which is very imperfectly expressed. 1 am indebted to 
