CRYPTOGAMIA. ALGAL Lichen. 
19 
At the roots of trees in Hag Crag wood, in Teesdale forest. Mr. 
Winch. E.) Barren heaths, on moss, and on the ground. Dicks, iii. 14. 
L. fri'gidus. Saucers tile-coloured, flat, border white; crust white, 
shrub-like ; branches very short, crowded. 
(E. Bot. 1879. E.)— Linn.Jil. Muse. 2. 4. 
The crust forms upon bits of grass, moss, &c. whence it gains something of 
a shrub-like appearance. (In its oldest state it changes to a true shrub¬ 
like Lichen. Mr. Brown. 
Shrubby Moss Lichen. Lecanora tartarea, var. y Hook. Common on the 
tops of all the Highland mountains. On the Pentland hills, and on the 
links of Aberdeen. Mr. Brown. E.) 
L. cupula'ris. Saucers pale brick colour, nearly flat; border pale 
brown j crust pale greenish brown, with black dots. 
Hedw. Stirp. ii. 20. B. 
(Dotted Lichen. E.) On trees. On slate rocks in Scotland. 
L. crenula'rius. Saucers red rust-coloured, border the same, very 
finely scolloped; crust grey. 
(Hoffm . Lich. 12. 1 — E. Bot. 1650. E.) 
Saucers varying in size and in shape, the border, especially in the large ones, 
finely plated. Crust roughish. 
(Rusty-shielded Lichen. L. ferrugineus. E. Bot. Lecidea ccesio-rufa. 
Achar. Hook. E.) On rocks and trees. (On walls in the neighbourhood 
of Lanchester; and on trees and walls near Egleston, Durham. Mr. 
Winch. E.) Rocks near Llanufydd, Denbighshire. Mr. Griffith. On 
flints on the highest parts of the Isle of Wight. 
L. EXANTHEMAT f icus. Saucers flesh-coloured, very minute, sunk in 
the white dots of the crust ; crust ash-coloured, sprinkled with 
white dots. 
Linn. Tr. i. 4. 1 — (E. Bot. 1184. E.) 
Crust very thin, scarcely palpable: grey, sprinkled with white dots con¬ 
sisting of small cavities closed by a white wrinkled substance, which 
opening in the centre discover the saucer. These dots separate when old, 
and leave a cavity in the stone. Dr. Smith. Linn. Tr. i. p. 81. 
(Eruptive Lichen. Thelotrema exanthematicum. Achar. Hook. E.) On 
calcareous rocks in Scotland. Dickson, iii. 14. (On limestone rocks 
between Gordale and Malham Tarn, Yorkshire. Hailstone in Whitaker’s 
Craven. On the banks of the Tees, Durham. Rev. Mr. Harriman. E.) 
L. marmo'reus. Saucers flesh-coloured within, concave; border 
whitish and hairy ; crust pale greyish brown. 
Hoffm. Enum. 6. 4. 
(Hairy-bordered Lichen. E.) On the bark of trees, and on the bare 
ground covered with decayed moss, in Yorkshire, Derbyshire, and Scot¬ 
land. 
L. tricolor. Saucers orange-coloured, border pale brown; crust dull 
green. 
( E.Bot . 739 — Bolt. 124s—Mich, 54. Ord.xxxv ii.2— Hoffm. Enum. iii, % e. E.) 
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