OP GREAT BRITAIN, 227 



Ireland :— Killarnejr. Sir T. Gage. 



Wales: — Cardiganshire! Mr. Knight. Nannau ; Pistyll-y-cain. Mr. Bolm.es. 

 Conway falls ! 



"Spores .106— .140 mm. long, .028— 68 mm. broad." {Nyl.) " Spores. 060— 

 210 mm. long, .026— 58 mm. broad." (T. M. Fr.) 



2. P. concreta, Nyl. white or whitish, continuous, thichish, rimose, 

 unequal (K yellow then orange-red) ; apothecia immersed, endo- 

 carpoid, colourless; ostiolum dark, punctiform ; spores 2, colourless, 

 oblong, simple, very large; gelatina hymenea I — , but thecee in- 

 tensely blue. 



On micaceo-schistose rocks, rare. 1876. 



Stn :— Nyl. in Flora 1876. p. 234. P. Westringii, Nyl. Obs. Pyr. or. p. 38. 



Geog. Distkib : — North and Arctic America, Eastern Pyrenees. 



Bot. Prov:— 6, 7.. .26. 



Ireland : — By the sea, Letterfrack, Salrock ! near Kylemore, Connemara. 

 Mr. Larbalestier. (1876.) 



Wales :— Yr Eifl ! Mr. Holmes. Dolgelley ! 



An American species forming the typical state of P. Westringii, (Ach.) 

 Spores .115— .250 mm. long, .052— .080 mm. broad. (Nyl.) Spores .140 mm. 

 long, .07 mm. broad. 



3. P. Westringii, (Ach.) greyish or creamy-white, tartareous, 

 thickish, rimoso-areolate, areola plane; verruca scattered, flat, 

 contorted and difformed ; ostiola brownish-black, flat, irregular, 

 thalline margin abraded ; spores 2, colourless, elliptical, simple ; 

 {thallus K yellow, then orange-red.) 



On rocks, old walls, &c. 1861. 



Stn :— Ach. Act. Stockh. 15. 179. (1794.) Syn. 282. P. lactescens, Mudd Man. 

 272. (1861.) Crombie Enum. 59. Isidiwm, Turn, and Borr. Lich. Brit. 93. 



Fig : — Westring Faergh. t. 4. 



Exs :— Mudd 260. M. & N. 1066. Mass. 86. 



Geog. Distrib :— Italy, Vosges, Sweden, France, Switzerland, E. Falkland. 



Bot.Prov:— 2...7...10, 11.. .15.. .23.. .31. 



England : — Ayton Moor I Airyholme Bridge, Cleveland. Mr. Mvdd. Arken- 

 dale ! Thornthwaite ; near Keswick ; Teesdale Forest. Rev. J. Sarriman. 

 Tunbridge Wells ! Mr. Jenner. 



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



Ireland : — Lough Bray near Dublin. Mr. Turner. 



Wales : — Barmouth ! Bev. T. Salwey. Anglesea. Bev. Hugh Davies. Crib 

 Coch ! Snowdon. Gimlet Bock ! Pwllheli. 



Channel Islands :— Noirmont Bay, Jersey. Mr. Larbalestitr. 



The chemical reaction and general aspect show that Isidiwm, Westringii, Ach. 

 is identical and therefore the original name is restored. 



4. P. glomerata, (Schleich.) yellowish-cream-colour, effuse, ver- 

 rucoso-conglomerate, verrucse globulose, smooth ; apothecia 1 : ostiola 

 darh-brown, punctiform, depressed or sub-papillate; spores 4, col- 

 ourless, ellipsoid, simple ; (thailus K yellow, then orange-red.) 



On mosses in alpine localities, rare, 1864. 



STN :— Schleicher Cent. 3. 77. (1805—1807.) Ach. Syn. 111. Nyl. Scand. 182. 

 Mudd Man. 277. 



Fig :— HeppSporen t. 77. f. 681. Leight. Ang. Lich. t. 11, f. 2. 



Exs;— Hepp 681. Schasr. 120. Am, 132. AnziLangob. 227. 



Geog. Distrib :— Norway, Germany, Switzerland, Chili, N. Zealand, Mel- 

 ville Island. 



Bot. Prov :— 15. 



Scotland ;— Ben Lawers. Mr. Carroll. (1864.) Craig-na-Calliach, Perthshire, 

 Dr. Maingay. Moel Gurdy, Breadalbane. Bev. J. M. Crombie. 



" Spores .021 to .025 in. long, by .007 to .009 in. broad." (MvM.) " Spores 

 .072— .125 mm. long, .028— 44 mm. broad." (Nyh <fe T. M. Fr.) Spores .085 

 mm. long, .040 mm. broad. 



