aquat’icus. 
fucoi‘des. 
CRYPTOGAMIA, ALGAE: Lichen, K: Foliage Lra- 
THER-LIKE. 
on many of the stones under the water in the lake. Mr. Grie- 
FITH. | 
L. Tubercles brown, small, globular, immersed in the 
substance of the leaf :. foliage brownish green, lobes 
~~ blunt, tiled, puckered and corrugated ; underneath 
‘reddish brown, deeply pitted and strongly veined. — 
_ E. bot. 594-Hoffm. lich. 45—Dill. 30, 128-Weber, 4. 
_ .Dull.dark green above, and smooth. Ash-coloured,/clouded, 
wrinkled and pitted when dry. Sprinkled with brown wart-like 
dots, in clusters. Saucers rarely found, few, circular, sitting, 
reddish brown; border thick, = colour of the leaf.° It has an 
vurinous smell. Horrm. The saucers mentioned and figured by 
Hoffman, seem to be only the tubercles in their most expanded 
state of growth. 
L. fluviatilis, Bot. arr. ed, iii. Platisma aquaticum. Hoffm. 
3 dich. il. pe 69. Lichen aquaticus. Weis; Crypt. P- 77. ‘ey 
fuviatilis. Huds. and Weber spicileg p. 265. » The fig. of 
Dill. has been cited as the var. of L. miniatus. On stones in 
rivulets, Near Perfeddgoed House, Bangor; and at Funnon 
Comb y Goff, Radnorsh. Dit. muse. p. 225. [Found by 
Mr. Griffith on stones, often under water in Llyn Idwell, 
Caernarvonshire, who favoured me with specimens, observing 
that though by most authors made a var. of L. miniatus, he 
thinks it perfectly distinct. ] forint % 
. K. Foliage LEATHER-LIKE. 
L. Tubercles white, mealy, lateral: plant whitish, hoary, 
porous, much branched; branches in bundles, cylin- 
drical ; subdivisions awl-shaped, bluntish, short, 
nearly of the same height, =, 
Dill, 22. 60. oo 7 
Has much affinity with L. fuciformis, in its tough leather- 
like texture, but it is distinguishable by many marks. Dil- 
lenius’s figure was taken from im fe specimens. Dicks. 
Narrow at the base, branching, branches the breadth of a straw, 
1. to 2 inches long, greyish. Tubercles small, flat, mealy, on 
the edges and sometimes on the surface of the leaves, whiter 
than the rest of the plant. Dit. Barren segments acute; 
the fruit-bearing blunt. Saucers concave when young, when 
old convex, shining, on short pedicles: Retz. 
LL, scopulorum. Retz. iv. 103, and Gmel. syst. veg. Rocks 
