OF GREAT BRITAIN. 315 



Not to be confounded with L. disciformis, which has a different chemical re- 

 action, larger spores, and other characteristics. 



Syn : — Buellia saxorum, Mass ! Hie. 82. (1852.) Buellia leptoclme, Mass. 

 Geneac. 20. Lecidea disciformis, Fr. Nyl ! Scand. 236, (in part). 



Fig :— Mass. Ric. fig. 169. Hepp Sporen t. 86. f. 752. 



Exs :— Nyl. L. P. 60. Larbal. 35. Mass. 347. Hepp 752. Anzi Etr. 31. 



Geog. Distkib : — Italy, France, Pyrenees, 



Bot. Pbov :— 10... 31. 



England : — Farndale ! Yorkshire. Mr. Mudd. 



Channel Islands:— Noirmont ! Jersey. Mr. Larbalestier. 



Spores .0135— .015 mm. long, .006— .008 mm. broad. 



197. L. saxotilis, (Sohaer.) white or whitish, moderately thick, 



tartareous, rwgoso-unequcd, (K faint yellow C orange) ; apothecia 



minute, scattered, at first innate, then sessile, black, plane, margin 



. thin, entire ; hypothecium nigro-fuscous ; spores 8, fuscous, oblong, 



1-septate, small. 



On sub-alpine rocks, not common. 



Syn -.—Calicium saxatile, Schser. in Natur. Anz. Winterm. 35. (1821.) Enum. 

 166. Nyl. Scand. 237. Mudd Man. 216. 



Fig: —Hepp Sporen 1. 17. f. 145. 



Exs :— Hepp 145. Zw. 140; Am. 166. ». 6. Kabh. 800. Anzi Langob. 198. 

 Schaer. 240. 



Geog. Distrib :— Bavaria, Switzerland, Lombardy, Italy. 



Bot. Pbov :— 7.. .15.. .26 . 30. 



Scotland : — Near Nigg, Kincardine. Rev. J. M. Crombie. 



Ireland : — Divis Mountain co. Antrim. Dr. Moore. Doughruagh Mountain ! 

 Galway. Mr. Larbalestier. 



Walbs : — Barmouth. Rev. T. Salwey. Craig Breidden ! Montgomeryshire. 

 Drwsynant ! 



" Spores .002 to .0025 in. long, by .001 in. broad." (Mudd. ) " Spores .009— 

 .015 mm. long, .0045— .0065 mm. broad." (Nyl.) " Spores .009—14 mm. long, 

 .004—6 mm. broad. Paraphyses cohaerent, apices nigricanti-fuscescent. Asci 

 I vinous-red, apices blue, the other parts dirty-blue." (T. M. Fries.) Spores 

 .011— .012 mm. long, ,005 mm. broad. Hymenium I blue. 



198. L. verruculosa, (Borr.) greenishsyellow, thin, sub-determi- 

 nate or effuse, minutely areolato-rimulose, smooth, plane, or convexo- 

 unequal, (K yellow C red) ; hypothallus brownish-black ; apothecia 

 minute, innate and solitary in the areolce, black, plane or depressed, 

 margin thin, soon obliterated ; hypothecium dark-brown, ; spores 8, 

 1 fuscous, oblong, 1-septate. 



On maritime and mountain rocks, not unfrequent. 1811. 



Stn :-E. Bot. 2317. (1811.) Hook. Br. Fl. 2. 174. Mudd Man. 215. 



Fig :— E. Bot. 2317. 



Exs :— Leight. 189. Zw. 26. 135. 425. Anzi Langob. 196. Mudd 186. 



Geog. Distrib :— Germany, Lombardy. 



Bot. Pbov:-1...6, 7...10, 11.. .15. ..19. .26. 



England : — Muggleswick Fell, West Durham. Mr. Winch. (1811.) Lynmouth. 

 Miss Attwood. Lanbraugh Bigg ! Carlton Bank ! Cleveland. Mr. Mudd. 



Scotland : — Craig Tulloch. Rev. J. M. Crombie. 



Ireland : — Dunkerron ! Dr. Taylor. Hill near Cork ' Blackwater Bridge and 

 Lough Carag co. Kerry. Mr. Carroll, near Kylemore ! Galway. Mr. Zarba- 



Wales:— Barmouth ! Llanachar Bridge ! near Fishguard, Pembrokeshire. 



" Spores .0025— .003 in. long by .00125— .00175 in. broad." (Mudd.) "Spores 

 ,014—16 mm. long, .007—9 mm. broad." (T. M. Fries.) Spores .013—16 mm. 

 long, .006— .008 mm. broad. 



The kaleida, Tayl. MS. and the ocellata forms of the continental lichenists 

 appear to be only states of L, verruculosa, differing chiefly in the more dispersed 

 areolae of the thallus which surround the apothecia. with a pseudo-thalline pro- 



