322 THK LICHBN-FLOKA 



Wales :— Barmouth. Rev. T. Salwey. 



" Spores .012—17 mm. long, .007— .010 mm. broad." (Nyl.) " Spores .011 

 —17 mm. long, .006—10 mm. broad." (T. M. Fries.) "Spores .003 to .0035 

 in. long by .0015 to .002 iD. broad." (Mvtdd.) Spores .014-. 0165 mm. long, 

 .009 mm. broad. 



210. L. sub-disciformis, Leight. dirty-yellowish-white, thin, 

 minutely areolato-rimulose, plane, nigro-limitate, (K yellow then 

 red); apothecia scattered, sessile, plane, blackish, more or less 

 pruinose, margin thick, entire, paler; hypothecium Mack; 

 hymenium pale-brown ; spores 8, fuscous, oblong, 1-septate. 



On rocks, not common. 1851. 



Geog. Distblb : — Em-ope. 



Bot. Pbov:— 1...7...26...31. 



England :— Torquay ! Devon. Dr. Dcakin. Lamorna ! Cornwall. Rev. T. 

 Salwey. 



Ireland : — Salrack ! Connemara. Mr. Larbalestier. 



Wales :— Sychnant ! near Conway ; Diganwy ! near Conway ! Conway 

 Mountain ! Holyhead Mountain ! Crib C'och ! Snowdon. 



Channel Islands : — South side of Jerbourg ! Mr. Larbalestier. 



Not to be confounded with L. saxorum, Mass. or L. disciformis, Fr. which 

 have a different chemical reaction and other characteristics. Faraphyses dis- 

 tinct. Spores .013— .019 mm. long, .007— .008 mm. broad. 



Var. meiosperma, Nyl. s imil ar to the type, but with apothecia 

 often caesio-pruinose, and smaller spores. (K yellow then red.) 

 On rocks, rare. 1868. 



Syn :— Nyl. in Flora 1868. p. 478. Crombie. En. 88. 



Geog. Distblb : — Europe. 



Bot. Pbov :— 31. 



Channel Islands : — Jerbourg, Guernsey ; Coast of Sark ; Jersey ! Mr. 

 Larbalestier. 



"Spores .009— .012mm. long, .005— 7 mm. broad." (Nyl.) Spores .01— .011 

 mm. long, .005 — 7 mm. broad. 



211. L. succedens, Nyl. whitish, thin, granulate, unequal or 

 sub-areolate ; apothecia fuscous-black, moderate, margined, colour- 

 less within ; hypothecium fuscous or rubricoso-fuscous ; spores 8, 

 nigrescent, ellipsoid, simple or 1-septate, epispore thin; paraphyses 

 moderate, articulate, apex thickened, fuscous or fuscescent ; 

 gelatina hymenea ceerulescent, then vinous-red with iodine. 



On alpine micaceo-schistose rocks, rare. 1866. 



Syn :— Nyl. in Flora 1866. p, 372. Crombie En. 89. 

 Geog. Distblb :— Europe. 

 Bot. Pbov : — 15. 



Scotland : — Ben Lawers. Aim. Jones. 1866. 



Compare L. secedem, Nyl. Systematically near L. nigritwla, Nyl. Spores 

 .011 — 14 mm. long, .0045 — .0055 mm. broad. 



212. L. Hookerii, (Borr.) white or pale-yellow, consisting of 

 oppressed or plicato-rugose squama, somewhat farinose, effigurate 

 at the circumference, (K faint yellow C faint yellow) ; apothecia 

 small, black, plane ; hypothecium black ; spores 8, fuscous, ellipsoid, 

 1-septate. 



On earth on alpine rocks, rare. 1808. 



Syn :— NyL Prodr. 139. 



Geog. Dlstbib : — Italy, Helvetia, Pyrenees. 



Bot. Pbov :— 15. 



Scotland :— Ben Lawers ! Messrs. Hooker & Borrer. (1808) 



