22 
CRYPTOGAMIA. ALGiE. Lichen. 
L. Jlavescens. Huds. and With. See L. candelarius. Bark of trees, walls, 
rocks, and stones. P. Jan.—Dec. 
L. lu'teus. Saucers yellow, with a yellow border; crust grey green. 
Dicks. 2. 6— {E. Bot. 1263. E.) 
Crust a hoary meal, often scarcely discernible, finely sprinkled over a stra¬ 
tum of moss, or merely tinging it of a whitish hue. Saucers deep yellow, 
numerous, of a middling size, flat, sometimes two or three together, the 
rest scattered. Dicks. ( Crust mealy. E. Bot. 
Yellow-shielded Crustaceous Lichen. Trunks of trees. In a wood 
near Bangor. Mr. Turner. E.) 
L. rimo'sus. Saucers sea-green, with a white border; crust whitish, 
cracked into roundish angular pieces. 
(E. Bot. 1736. E.j— FI. Dan. 468. 3. 
Cracked Chalky Lichen. Rocks and stones in Yorkshire. Dicks. 12. 
B. (4) Crustaceous, with both Tubercles and Saucers. 
L. pso'ra. Saucers blackish, border and outer side whitish; tubercles 
blue black; foliage grey white, leaves slightly many-cleft. 
Hoffm. Lich. 8.1; and Enmn. 12. 1— {E. Bot. 1052. E.) 
Crust in circular patches; one or two inches over. Fructifications numerous, 
in the centre. Hoffm. 
(Grey-warted Lichen. L. ccesius. Achar. E. Bot. E.) Stones, roofs, 
and on moss. (Gathered by Mr. Turner on the grave-stones, &c. in the 
churchyard of Burgh, Suffolk, and Acle, Norfolk; and by Mr. Sowerby 
on the slates of Richmond House, Richmond Park. E. Bot. Upon houses 
about Gainford, and at Fawdon Slate, Durham. Mr. Winch. E.) 
L. ge'lidus. Tubercles tile-coloured, in the centre; saucers concave, 
the same colour, in the circumference; border brown white ; 
crust brown white. 
Dicks. H. S. — (E. But. 699. E.)— FI. Dan. 470. 2. 
Crust leafy, circular, so closely growing to the rocks as not to be separated 
from them; whitish, longitudinally wrinkled. Tubercles occupying the 
centre of the crust, reddish tile-coloured, convex, considerably elevated 
with ray-like plates, without any border. Linn. The redness of the 
saucers disappears when the plant is ary. Dicks. It forms a circular 
crust about the size of a shilling, so thin as hardly to bear separation from 
the rocks. The fructification generally consists of one solitary tubercle, 
near the centre of the plant, considerably elevated above the crust. Have 
only twice found it with saucers. Mr. Griffith. 
L. heclce. (Eder. FI. Dan. viii. 8. as CEder very rightly conjectured. As 
Linnaeus had not observed any saucers, he only mentioned a tubercle in 
the centre. L. gelidus. Huds. 528. is a very different plant. Dicks.—See 
L. ventosus. 
(Thin-crusted Rock Lichen. Lecanoragelbda. Achar. Hook. E.) Rocks 
in the Highland mountains, and on large stones, generally near water. 
Mr. Brown. Between Llanberris and Pen y Gorphwysfa; also at Gallt 
y ddol garn, between Pencraig and Capel Cerrig. On stones in Cwm 
