OF GREAT BRITAIN. 429 



exceedingly narrow, naked ; proper margin slender, elevated, 

 flexuose and crisped. (Leight. Br. Graph. 34. Exs. 244, Anzi It. 

 S. 341 Mudd 217.) 



England :— Sussex ! Mr. Borrer. Holly Bush Hill, Malvern Kange, Wor- 

 cestershire ! Mr. Lees. Bousdale Gill, Cleveland ! Mr. Mudd. Kelvedon, 

 Essex. Mr. Varenne. New Forest. Rev. J. M. Crombie. Abdon ! Shropshire. 



Scotland : — Near Stirling. Rev. J. M. Cromhie. 



Ireland : — Derryclare ! co. Galway. Mr. Larbalestier. 



Wales : — Edderton Wood ! Montgomeryshire. 



forma divaricata, Leight. pale-yellow, effuse ; lirellce short and 

 straight, with a central branch divaricate or at right angles ; epithe- 

 cium narrow and canaliculate, pruinose ; proper margin thickish, 

 entire, flexuose. (Leight. Br. Graph. 35. Exs. 21. 19. Hepp 535. 

 Larbal. 88. Anzi It. S. 341;) 



England : — Sussex ! Mr. Borrer. Tunbridge Wells ! Mr. Thompson. Oxford- 

 shire ! Mr. Baxter. Cliffrigg ! Mr. Mudd. Abdon ! Shropshire. 



Scotland : — Knockdolian ! Ayrshire ; Bammerscales ! Dumfriesshire. Mr. 

 Thompson. 



Ireland : — Colin Glen, Belfast ! Bangor ! Tnllamore Park ! co Down. Mr. 

 Thompson. 



Wales : — Gloddaeth ! near Conway, Carnarvonshire ; Woods near Capel 

 Curig ! Gwydir Woods ! Bettws-y-coed. Edderton ! 



Channel Islands : — St. Lawrence Boad ! Beaumont ! Bozel ! Jersey. Mr. 

 Larbalestier. 



forma recta, (Humb.) pale-yellow or straw-colour, in horizontally 

 elongated patches, nigro-limitate ; lirellce very numerous, elongated, 

 narrow, simple, horizontal and parallel, acuminate and sharply 

 pointed at the extremities ; epithecium canaliculate, naked or sub- 

 pruinose ; proper margin thick, elevated, uniform. (Leight. Br. 

 Graph. 38. t. 6. f. 20. Zw. 306. E. Bot. t. 2301. Hepp 46. 888. 

 Anzi Ital. S. 343.) 



England : — Sussex ! Mr. Borrer. Ingleby Park ! Easby Wood ; Baysdale, 

 Cleveland. Mr. Mudd. New Forest. Rev. J. M. Crombie. 

 Scotland : — Near Stirling. Rev. J. M. Crombie. 

 Spores .027 mm. long, .007 mm. broad. 



forma stellata, Leight. pale-olive, fusco-nigro-limitate ; lirellse 

 stellate, distant, few, scattered, rays simple, acute ; epithecium 

 canaliculate, naked ; proper margin thick, uniform. (Leight. Br. 

 Graph. 36). 



England :— Sussex ! Mr. Borrer. Airyholme Wood ; Hoggarts Wood ; Ingleby 

 Park. Cleveland. Mr. Mudd. 

 Wales : — Edderton ! 



Var. serpentina, Ach. white and cinereous, thickish, tartareous, 

 pulverulent, cracked, determinate ; lirellce immersed, elongated, 

 w-owded, flexuose, simple or branched, obtuse, cresio-pruinose ; 

 epithecium at length plane ; proper margin thin, elevated ; thallo- 

 dal margin lateral, incrassate ; spores as above. 



On trees, oak, beech, ash, sweet-chestnut, frequent. 



Stn :— Ach. L. TJ. 269 (1810.) Syn. 83. Nyl. Scand. 252. Prodr. 149. Or. 

 diffiracta. Leight. Br. Graph. 39. 

 Fig :— Leight. Br. Graph, t. 6. f. 21. 

 Exs .—Mudd 221. 222. 

 Geog. Distrib : — Europe, America. 

 England : — Tilgate Forest ! Sussex. Mr. Borrer. near Little Malvern ! 



