24 
CRYPTOG AMI A. ALGJE. Lichen. 
C. Crustaceous , tiled, spreading, fixed. 
L. leucopimAjs. Tubercles brown black, with whitish borders when 
young; crust brownish, ash-coloured, tiled, rather granulated 
than leafy. 
(E. Bot. 1501. E.)— FI Ban. 955. 2—Dill. 82. 2. 
Composed entirely of granulated particles of a greyish blue colour, out of 
which rise a few tubercles, flat, fleshy, light reddish colour when fresh, 
blackish when dry. The under side of the crust is black, spongy, and as 
if it had been burnt. Dill. The plant of the FI. Dan. and that of Dille- 
nius are here given as the same, on the authority of Mr. Dickson; but the 
characters as given by Vahl. and Dill, do not quite coincide. 
(Ash-coloured Granulated Lichen. L. scalar is. E. Bot. Lecidea sea- 
laris. Achar. Hook. E.) On rocks thinly covered with soil, in the High¬ 
lands. Summit of Carnedd Llewelyn. Mr. Griffith. (Stone fences in 
Cornwall, frequent. E.) 
L. OBSCif rus. Saucers brown black; border pale brown ; leaves darker 
brown, strap-shaped, many-cleft, the ends bent down. 
Dicks. H. S. — (E.Bot. 982. E.)~Dill. 24. 69— Hoffm.Lick. 32.2— Mich.51.6. 
Saucers very numerous, and frequently so crowded as to deform one another, 
borders thick. Tubercles besides, of the same colour as the leaves. Mr. 
Woodward. Leaves cut into very narrow segments, smooth, with nu¬ 
merous black fibres underneath. Dill. 
(Sun-burnt Lichen. E.) L. pullus. Lightf. 825. L. fiiscus. Huds. 533. 
(L. aquilus. Achar. E. Bot. Parmelia aquila. Achar. Syn. Hook. E.) 
Rocks and larger stones near Bangor and other places in Wales, West¬ 
moreland, and Scotland. Rocks in Pengwern Frith, above the road lead¬ 
ing from Llansannan to Llanufydd, in Denbighshire. Mr. Griffith. 
L. Luffiinus. Tubercles black; leaves brownish green, white under¬ 
neath, minute, thick, indented. 
FI. Ban. 1064. 2-(E. Bot. 1329. E.)— Mich. 54 Ord. 36. 4— Bill. 30. 134. 
Tubercles rather hollowed at the top. Leaves thick, fleshy, concave, tiled ; 
sometimes lobed. Dillenius had not seen this plant; his figure is taken 
from that of Micheli, the fructification in which is very imperfectly 
expressed. I am indebted to Mr. Griffith for fine specimens in fruit which 
he gathered in North Wales. Mr. Dickson found it on rocks in the moun¬ 
tains of Scotland. 
(Lump Lichen. Lecidea lurida. Achar. Hook. About Egleston, Durham. 
Rev P Mr. Harriman. E. Bot. E.) 
L. multif'idus. Saucers brown, scattered; foliage yellowish, semi- 
cylindrical, indistinctly many-cleft. 
(E. Bot. 1375. E.)— Dicks. 9. 7. 
Plant widely spreading, nearly circular, firmly adhering to the stone on 
which it grows; many-cleft; segments semi-cylindrical, waved, some¬ 
what adhering to each other; blue black in the centre, with black dots ; 
yellowish towards the extremities. Powdery male clusters scattered on 
the surface. Saucers scattered, small, concave, brown within, the border 
and the outside yellowish. 
(Incurved Yellow-warted Lichen. L. incurvus. Achar. Prod. Par - 
melia recurva, Achar, Syn. Hook. E.) On stones in Scotland. Dicks, iii. 
