OF GKEAT BRITAIN, 



347 



Geog. Distrib : — Sweden, Germany, Switzerland, Italy, Hungary, Bavaria, 

 France, Africa, N. America. 



Bot. Prov :— 1, 2, 3, 4, 5, 6, 7...10...15...(19...26...30)...31. 



England :— Seething, Norfolk. Sir J. E. Smith. (1808.) Masham ! Yorkshire. 

 Mr. Mudd. Lewes ! Mr. D. Turner. Sussex ! Mr. Borrer. Oswestry, Shropshire. 

 Rev. T. Saiwey. near Worcester. Dr. Soil. Kelvedon, Essex. Mr. Varenne. 

 Midland Counties. Mr. Purttm. Cambridgeshire. Rev. R. Relhan. near Exeter. 

 Rev. J. M. Crombie. Eynsford, Brastead, Ightham, Kent. Mr. Holmes. Tets- 

 worth ! Oxfordshire. Mr. Larbalestier. Sapperton, Gloucestershire. Mr. W. 

 Joshua. Burton Court ! Herefordshire. Rev. J. P. Crouch. Montford Bridge ! 

 Nobold ! Shelton ! near Shrewsbury ; Worfield ! Llanf orda ! Shropshire. | 



Sotland : — Killin. Dr. Holl. 



Ireland : — Not unfrequent. Mr. Carroll. Letterfrack ! Mr. La/rbalestier. 



Wales : — Near Dinas Bran, Llangollen ! Builth ! 



Channel Islands : — Jersey, Guernsey. Mr. Larbalestier. 



"Spores .016—20 mm. long, ,007—9 mm. broad." (Nyl.) " Spores .003— 

 .004 in. long, .00125 — .002 in. broad. Spermatia straight, cylindrical." (Mudd.) 

 "Spores .015—22 mm. long, .007—10 mm. broad." (T. M. Fries.) Spores 

 .0165—0185 mm. long, .0085— .0095 mm. broad. 



forma populorum, Mass. greyish-white, sub-orbicular, determinate, 

 unequal or areolato-verrucose, (K — C — ) ; apothecia constantly 

 naked. 



On poplar, not common. 1860. 



Syn : — Diplotomma populorum, Mass. Bic. 99. Mudd Man. 218. /. leucoplaca, 

 Leight. L. El. 2d. ed. p. 326. (non D.C.) 

 Fig :— Mass. Ric. f. 201. 



Exs :— Nyl. 65. Mass. 289. Zw. 230. Anzi Etr. 33. Mudd 192. 

 Geog. Distrib : — France, Italy, Germany, Hungary. 

 Bot. Prov :— 10. 

 England : — Near Easby and Carlton, Cleveland. Mr. Mudd (1860.) 



forma epipolia (Ach.) white, tai'tareous, rimoso-areolate, areolae 

 unequal or swelling ; apothecia black, cossio-pruinose, plane, at 

 length, convex or hemisphserieal, always sessile, proper margin per- 

 sistent. 



On calcareous rocks and walls, frequent. 1803. 



Stn :— Ach. Prodr. 58. (1798.) Syn. 32. Nyl. Scand. 235. Somrft. Suppl. 147. 

 Mudd Man. 219. 



Fig :— E. Bot. 1137. Hepp Sporen 1. 17. f. 146. 



Exs :— Mudd 193. Zw. 229. Mass. 358. 



Geog. Distrib : — Egypt, Norway, Germany, Italy. 



Bot. Prov :— 1, 2, 3, 4, 5.. .7.. .10. .31. 



England : — Near Ayton ! Cleveland. Mr. Mudd. Sussex ! Mr. Borrer. 

 Oswestry ! Rev. T. Saiwey. Market Dereham Church, Norfolk (1803.) Suffolk. 

 Mr. Turner. Malvern Hills. Dr. Holl. Ide near Exeter. Mr. Povrfitt. Kelvedon, 

 i oggeshall, Essex. Mr Varenne. Midland Counties. Mr. Purton. Sandown 

 Castle near Deal ; Plaxtol, Kent. Mr. Howse. Kingsland ! Shrewsbury. 



Wales : — Fishguard ! Pembrokeshire. 



Channel Islands : — Jersey ; Guernsey. Mr. La/rbalestier. 



forma margaritacea, (Ach.) glaucous-white or pearly, subpulveru- 

 lent, tartareous, unequal, contiguous, subrimose ; apothecia black, 

 albo-pruinose, minute, immersed, at first plane with a very thin 

 margin, then hemispherico-convex, immarginate, with a spurious 

 tliallodal margin. 



On calcareous rocks and walls, frequent. 



Syn :-Ach. Syn. 32. (1810.) Sommrf. Suppl. 148. Mudd Man. 219. 



Fig :— Hepp Sporen t. 17. f. 146. 



Exs :— Hepp 146. Nyl. 64. Somrft. 50. 



Geog. Distrib : — Hungary, Norway, France, Germany, Pyrenees. 



Bot. Pr,ov :— 2...5...7...10...20...26, 



