OF GREAT BRITAIN. 115 



STN:-Linn. Sp. PI. ed. 1.(1753). Ach. Syn. 200. Nyl. Syn. 395. Mudd 

 Man. 99. 



Fig :— E. Bot. 2180. 



Exs :— Fellm. 81. Reich, and Schub. 89. 



Geog. Distrib : — Europe, Africa, America, Asia, Australasia. 



Bot. Prov:— 1...3.4, 5...7...11...14, 15. ..(19— 30). .,31. 



England :— Berwick-on-Tweed ! Dr. G. Johnston. Northumberland and Dur- 

 ham. Mr. Winch. Kelvedon, Essex, Mr. Varenne. Devonshire. Mr. Parfitt. Cam- 

 bridge. Rev. R. SelAan. Oxford. Dr. Sibthorp. Bedford. Rev. V. Abbot. Guestlin^, 

 Sussex. Rev. M. N. Bloomfield. near Shrewsbury ! Stiperstones ! Bomere ! Haugh- 

 mond Hill ! Shropshire. 



Scotland : — Oraigorook, Colinton and Swanston Woods. Mr. Maughan. Braid 

 Hermitage. Dr. GreviUe. Reeky Linn ; Airlie ; Camperdown ; Hare Craigs ; 

 Clova. Mr. W. Gardiner. 



Ireland : — Common. Dr. Taylor and Mr. Carroll. 



Wales :— Gwydir woods ! Bettws-y-coed. 



Channel Islands : — Guernsey. Rev. T. JSalwey. common on all the islands. 

 Mr. Larbalestier. 



" Spores .002 in. long, by .00125 in. broad." (Mudd.) " Spores .011—19 

 mm. long, .007— .010 mm. broad." (Nyl.) " Spores .010—18 mm. long, .007— 

 10 mm. broad." (T. M. Fr.) 



Var. exasperata, (Ach.) thallus and receptacle minutely papillato- 

 exasperate ; medulla white K — C — . 

 On trees. 



Syn :— Ach. Syn. 320. (1817). Nyl. Syn. 396. 



Pig :— Vaill. Paris, t. 20. f. 8. 



Exs :— Mass. 13. Mudd 72. Anzi It. S. 115. M. and N. 161. Leight. 263. 

 Am. 581. Schser. 370. right hand specimen 356. 



Geog. Distrlb : — Europe. 



Bot. Prov :— 2...5...7...10...15, 16.. .19.. .26. 



England :— Ayton, Cleveland ! Mr. Mudd. Pembridge, Herefordshire ! Rev. 

 J. F, Crouch, near Worcester. Dr. Soil. Eastbourne. Mr. Roper. Bomere Pool ! 

 near Shrewsbury ! Wilcot ! Shropshire. 



Scotland : — Loch Awe. Rev. J. M. Cromiie. Fort Augustus, Caledonian 

 Canal, Dr Lindsay. 



Ireland : — Glencar, co. Kerry ; Glena ; Base of Mangerton, Killarney, Mr. 

 Carroll. Killery Bay ! Connemara. Mr. Larbalestier. 



Wales : — Dolgelley. Dr. Soil. 



" Spores .009—012 mm. long, .007— .010 mm. broad." {Nyl.) 



Var. prolixa, Ach. dark olivaceous, sub-orbicular or effuse, laci- 

 niate, laciiiiae narrow, variously divided, multifid, plane, crenatO' 

 incised, under surface nigricant, fibrillose ; medulla white K — C — . 



On rocks, not unfrequent. 



Syn :— Ach. Meth. 214, (1803). Nyl. Syn. 896. 



Fig :-Hepp Sporen t. 82. f. 715. 



Exs :— Anzi It. S. 116. Schaer. 372. Leight. 291. Hepp 715. 



Geog. Distrib : — Europe, Algeria, Asia, Australasia, 



Bot. Prov:— 1... 6, 7...15...19...23...26. 



England : — Torquay, Ilsham ! Dr. DeaMm. Whitesand Bay, Cornwall ) 

 Wembury, S. Devon. Dr. Soil. 



Scotland : — Kincardine. Rev. J. M. Crombie. 



Ireland :— Howth. Dr. Moore. Mizen Head, Mr. J. Wright. Kilkee. Mr, 

 Carroll, south of Ireland. Miss Butchim. Cleghan! Connemara, Mr. Larba- 

 lesti&r. 



Wales :— Barmouth ! Fort Hill ! near Fishguard, Pembrokeshire. 



"Spores .009— .011 mm. long, .005— 6 mm. broad." (Nyl.) "Spores .009— 

 12 mm. long, .005—6 mm. broad." (T. M. Fr. )' 



Var. dendritica, (Pers.) castaneo-fuscous, or badio-nigricant, stel- 

 lato-orbicular, appressed, laciniss narrow, imbricated, variously 

 divided, multifid, subteretely convex, flexuose, incurved, under 

 surface nigricant. 



