40 
CRYPTOGAMIA. AL GM. Lichen. 
Hoffm. Lick. 30. 1 ~(E. Bot. 1354. E.)— Ger. 1372. 5—Dill. 13. 12— 
Barr. 1277. 4. 
Stem very short, woody. Branches many, sending- out shorter lateral 
branches one to two inches or more in length, grey green, beset with thin 
stiff fibres. Dill. Paler than the L.jloridus, grey green or yellow white ; 
branches more crowded and shorter. Hoffman. ( Tubercles mostly on the 
stem, lateral, flesh-coloured, rugged. E. Bot. E.) 
Common Rough Lichen. Woods, thickets, old hedges, and park paling. 
Stumps of old pear trees, Herefordshire. Mr. Stackhouse. (In fructifica¬ 
tion near Lewes, Sussex. Mr. Rorrer. And on birch trees near Avemore, 
in Strathspey, Scotland. Mr. Brodie. E. Bot. E.) 
L. chalybeifor'mis. Plant prostrate ; branches wide apart, waved 
and matted together. 
Dill. 13. 10— FI. Dan. 262. 
Stems stiff, cylindrical, diverging, variously bending, not crowded, two or 
three inches long, but little branched, grey to brown green. Growing on 
the trunks of oaks, it does not hang down, but clings to the bark. Dill. 
Fructification not discovered. 
(Pit os tiiate Matted Tree Lichen. L. juhatus. /3. E. Bot. Dr. Smith 
imagines this plant to be the same species as L. juhatus of Linn. Achar. 
With. &c. E.) Trunks of trees, stones, and old wood. On the south 
end of Kendal Fell, sometimes on the rocks, but more commonly on the 
dwarf junipers, the branches of which it covers, giving the shrubs a 
grotesque appearance. Mr. Gough. (On trees, in Sharnberry near Egles- 
ton. Mr. Winch. E.) 
L. exPlis. Saucers brown black ; plant black, rougliish, opake ; very 
much branched ; matted together. 
(E . Bot. 2318. E.)— Dill. 13. 9. resembles it. (Lightfoot.) 
Saucers nearly as large as white Poppy seed, hemispherical, bordered black, 
the bottom blackish brown, the edge very entire. Huds. Seems to be 
between a Lichen and a Conferva. I have examined many scores, but 
never found it in fruit. Mr. Newberry. I have examined thousands of 
specimens, but never found it with saucers. Mr. Griffith. 
(Dark Matted Rock Lichen. L. scaber. Huds. L. pubescens. E.Bot. 
E.) On the most naked rocks of the Highland mountains. Lightf. On 
rocks whose surfaces lie nearly even with the ground, on the sides of hills, 
the soil of which is peat earth, in Dartmoor, Devonshire. Mr. Newberrv. 
P. Jan.—Dec. 
L. lanVtus. Plant nearly black, opake, prostrate, very much branched, 
matted together. 
Jcicq. Misc. ii. 10. H — Dill . 13. 8 — (E. Bot. 846. E.) 
Resembling the L. pubescens, but much finer, nearly as fine as hair, less 
rigid, nay rather soft, very much branched, decumbent, black green, 
opake. Jacq. Two or three inches long. Branches not compressed, 
blacker, and more crowded than in L. juhatus, diverging in various 
directions, more branched and sub-dividing into shorter and more numer¬ 
ous hair-like segments, matted together. Dill. Branches sometimes 
swollen as if jointed. Can these swellings ever form the fructification ? 
Mr. Griffith is satisfied that L. lanatus and L. chalybeifbrmis are not 
distinct, nor have I yet seen any specimens which can justify a different 
opinion. 
