OF GREAT BRITAIN. 201 



Fig :— Mass. Bio. f. 3. 

 Exs :— Schser. 303. Anzi Langob. 44. 

 Geog. Distbib :— Pyrenees. 

 Bot. Peov;— 5...31. 



England :— Leigh Wood, Clifton. Mr. Larbalestier. (1865). 

 Channel Islands :— La Moye, Jersey ! Alderney. Mr. Larbalestier. 

 Questionable if distinguishable from Lecwka riviUosa. Spores .011 — .012 

 mm. long, .0045 — .0055 mm. broad. 



70. L. fuscescens, (Smrft.) whitish or cinereous, slightly gran- 

 ulose ; hypothallus thin, fusco-nigrescent ; apothecia fuscous, mode- 

 rate, plane, margined, internally whitish ; spores 8, colourless, 

 globular or subglobular, simple ; paraphyses distinct ; gelatina 

 hymenea I intensely blue. 



On birch. 



Syn :— Smrft. Lapp. p. 161. Nyl. Soand. 212. 



Bot. Peov :— 15. 



Scotland : — Base of Morrone, Braemar. Ben). J. M. CrcmMe. 



Spores diam. 0.006—7 mm. 



71. L. mammillifera, Strtn. darkly-cinereous or fusco-cinereous, 

 -minutely areolato-diffract, areolae plane, (K — C — ) ; apothecia 



black or fuscous-black, small, prominent, convex, internally pallido- 

 cinerascent, margin obtuse, . at length depressed ; spores 8, colour- 

 less, ellipsoid, simple ; paraphyses few, distinct, somewhat 

 thick, apices crasso-clavate, conglutinate, fuscous ; hypothecium 

 colourless ; gelatina hymenea I caerulescent then fulvescent, 

 especially the theose. 

 On rocks, rare. 1875. 



Syn :— Stirton in Trans. Glasgow Soc. Nat. p. 85. (1875,) 



Bot. Peov :— 15. 



Scotland : — Ben-y-gloe. Dr. Stirton. (1875.) 



Spores .008— .01 mm. long, .007— .0085 mm. broad. 



72. L. melanaspis, (Ach.) cinereo-glaucescent, mborhicular, ad- 

 hate, areolate, veirucoso-rugose in the centre, radiato-laciniate in 

 the circumference, lacinise convex, linear, multifid (K — C— ) ; 

 apothecia adpressed, fuscous-black or rufofuscous, margin entire ; 

 spores 8, colourless, ellipsoid, simple. 



On alpine rocks, rare, 1874. 



Syn :— Ach. Meth. 196. (1803.) Syn. 185. Nyl. Scand. 152. 



Exs :— T. M. Fries 56. Arn. 659. 



Geog. Distedj : — Norway, Sweden, Finland, Lapland, Alps. 



Bot. Pbov :— 16. 



Scotland : — Ben Brecht, Argyleshire. Mr. Paterson (1874.) 



" Spores .011— 14 mm. long, .007— 9 mm. broad." (Nyl.) " Spores .010— 14 

 mm. long, .006—10 mm. broad." (T. M. Fr.) Spores .012— ,013 mm. long, 

 .Q06-.OO7 mm. broad. 



******* Disk of apothecia K and G red. 



73. L. parella, (L.) whitish or albido-cinerascent, granulato- 

 rugose or verrucoso-granulate or rimoso diffract ; apothecia 

 numerous, crowded, anguloso-dififormed, disk plane, dusky-tes- 

 taceous, coarsely albo-granulate, often verrucose ; margin thick, 

 often radiato-crenulate ; spores 6-8, colourless, ellipsoid, simple, 

 large ; (thallus K yellow G yellow, the disk of apothecia alone 

 becoming red.) 



