(albo-caeruleccens) I. DISCOIDEI. 8.LECIDINI. 119 



Fries). Thallus glaucus vel sordide-albescens , tartareus , 

 effusus , nitidulus , rimulosns. Apothecia atra , caesio- 

 pruinosa , sub lamina alba , stralo inferiore carbonaceo , 

 adpressa , plana, tenuiter marginata ; margine nudo; rarius 

 convexa. Spic. 143. 198. 



ct. tulgaris Schser. ; crusta glauca vel sordide albes- 

 cente ; apotheciis minutis , planis ; disco pruinoso , margine 

 integro. Spic. 143. 198. Exs. 471. Icon. cit, opt. 

 Lecid. albo-caerulescens. Ach I Flk! ad mea speci- 

 mina. — Ad saxa granitica in regionibus campestribus et 

 alpinis , in Helvetia et Ilercynia Schaer. ,• in prov. Comensi 

 Garov. I in Gallia circa Andegavum Mougeotl Lozere Prost! 

 in Pyrenseis occid. , La Basseres Philippe ! Pic du Midi de 

 Bigorre Schaev. , in Tyroli Unger ! prope Heidelberg 

 V. Zwackh! — Optime Florkeus de crusta dicit: „lapidis 

 superficiem quasi oleato glauco colore illinatam reddit." 



/3. alpina Schaer ; crusta glauca •, apotheciis majus- 

 culis , adultioribus elevatis , planis , vel tumidis ; disco 

 pruinoso , margine flexuoso. Spic. 143. Exs. 185. — 

 Ad saxa rorida in montibus Grimsel et Tete noire Schaer. 



a. flavo-caertdescens (Lich. ilavo-caerulescens Ilornem. 

 fl. Dan. VIII. t. 1431. f. 1); crusla ochraceo-ferruginea. 

 Spic. 143. Exs. 186. Lecid. flavo-caerulescens Ach ! 

 Syn. Lich. silaceus Sm. EB. t. 1118. in coll. Sahc! 



b. oxydata; crusta apotheciisque ochraceo-ferrugineis. 



— In valle Lauterbrunnen Schaer. 



72. Lecidea contigua (Yerruc. contigua HofFm» 

 D. Fl. n. 184? Lecid. contigua Fr ! Sched. crit. XHI. 

 p. 14 — 16). Thallus e glauco cinereo-albus , tartareus, 

 effusus , opacus , rimulosus. Apolhecia atra , cinereo- 

 pruinosa , sub lamina cinerea , slrato inferiore carbonaceo; 

 innata , plana , tenuiter marginata , rarius sessilia , convexa 

 ac nuda. Spic. ISl. 197. 



a,. vulgaris Schaer. ; crusta e glauco-albicante , tenuis- 

 sime, rimulosa ; apotheciis subcontiguis, planissimis, tenuiter 

 marginatis , cinereo-pruinosis. Spic. 143. 197. Exs. 446. 



— Fr! exs. 376 a. Lecid. viridi-atra Hook. in coll, 

 Salw ! — Ad saxa varia in regionibus campestribus et 

 alpinis per omn. Europ. 



