26 
CRYPTOGAMIA. ALGiE. Lichen. 
L. squama'tus. Saucers black, rough, rather convex, imperfectly bor¬ 
dered ; leaves green, rather glaucous, minute, thickish, rounded, 
but indented and angular. 
Diclcs. H. S. — Dill. 30. 135. 
Leaves small, thick, leathery, with shallow segments, whitish underneath. 
Dill. In some plants the saucers are rather dark brown than black. 
(Small-leaved Scaly Lichen. E.) On the ground in turfy places, Scot¬ 
land. Rocks in Cumberland. Dickson. On a wall about a mile from 
Cerig y Druidion; road side leading to Denbigh. Mr. Griffith. 
L. ciLiA^TuSi Saucers brown black, fringed; foliage dark green, leaves 
slightly many-cleft, fringed. 
Hoffm. Enum. 14<. 1. 
Leafits strap-shaped, divisions slender, dull dirty green, glaucous grey when 
dry, blackish when old, fixed firm to the barks of trees by numerous ten¬ 
drils on the underside. Hoffman. 
(Fringed Lichen. E.) On rocks and trees. Dicks, iii. 16. 
L. STY f Gius. Saucers brown black, numerous, circular, border broad, 
scolloped; foliage brown black to purplish and quite black; 
leaves hand-shaped, tiled, bent at the end. 
Hoffm. Lich. 25. 2.— Enum. 14. 2— (E. Hot. 2048. E.) 
Distinguished from the L. fahlunensis and omphalodes by the leafits being 
strap-shaped, with repeated forked divisions; and forming an irregular 
circle. Saucers very large when old. Hoffman. 
(Stygian Lichen. Parmelia stygia. Achar. Hook. E.) On the highest 
mountains in Scotland. Dicks, iii. 16. 
L. stella'uis. Saucers blackish brown: leaves ash-coloured, oblong, 
narrow, jagged. 
Hojfm. Enum. 13. 2— Dill. 24. 70— FI. Dan. 90. 7. 1— (E. Bot. 1697— 
the figure too green. E.) 
Of a greenish hue when moist, when dry ash-coloured. Huds. Saucers 
when young white or grey, being covered with a thin mealy pellicle, but 
as they enlarge and grow older the pellicle disappears, becoming black, 
with a border of the same colour as the leaves. Specimens sometimes 
found with only tubercles and no saucers. Lightf. Ash-coloured when 
fresh, whiter when dry. Leaves with narrow, oblong segments, diverg¬ 
ing from a centre, smooth. Saucers on the central part, black, with a 
grey border; sometimes intermixed with mealy tubercles. Dill. 
(Black-shielded Stellated Lichen. Parmelia stellaris. Achar. Hook. E.) 
Trunks of trees, walls, and stones.—More frequent on the smaller 
branches than on the trunks of trees. Dill. 
Var. 2. Saucers larger. 
FI. Dan. 957. 2— Hoffm. Enum. 13. 1— Dill. 24. 71— Jacq. Coll. ii. 15. 2. 
a. b—(E. Bot. 2063. E.)— Midi. 43. 2. 
In circles of four inches and more in diameter. Leaves when fresh rue-coloured, 
after being kept some years turning to russet-grey; segments stiffer, and 
not so closely united at their extremities. Saucers larger. Lightf. Deep 
glaucous green when wet, grey when dry, even whilst growing. Leaves 
stiff, segments blunt. Roots black fibres. Saucers numerous in the 
centre, of different sizes intermixed, glaucous when young, black when 
old; border the colour of the leaves. Dill. 
