— 512 — " 



14. Lecanora homoloplaca Nyl. — Thallus albidus vei 

 lacteo-albidus tenuis (crassii. 0,2-0,3 inillim.) determinalus 

 laevigalus rimulosus, anibitu teiuiiter obscure limilalus; apo- 

 Uiecia obscure rufa vcl fusca aut nigricaniia , plana, iniiata 

 (latit. 0,5 millim. vel minora) niargine thallino nullo cincta 

 (vel solum circuQiscissa), intus albido-incoloria ; sporaîS"^' 

 incolores ellipsoideae simplices, longit. 0,010-15 millim. , 

 crassit. 0,006-7 mill. , paraphyses médiocres, epithecium 

 fuscum vel fuscescens. lodo gelatina hymenialis bene caeru- 

 lescens. — Bengiœlla, ad lapides arenarios , socia Lecanorœ 

 cinnabarince. 



Obs. — Spermogonia et spermatia sicut in Lecanora sub- 

 fusca, ad cujus slirpem pertinet , sed faciès recedens versus 

 infimas formas slirpis L. cinerecs ( aut prope L. epuloticam 

 Acb.), nisi spennogoniorum nota consulatur. Thallus hydrate 

 kalico flaveus. Paraphyses apice parum incrassato fusces- 

 cenle. 



15. Lecanora lithagoga Nyl. — Thallus albus vel al- 

 bidus tenuissimus indeterminatus; apolhecia nigra innata 

 (in verrucis ihallodeis) plana (diam. 0,5-0,9 millim.), inter- 

 dum caesiopruinosa, marginalula , acceJente etiam aliquando 

 margine obsolelo thallino (aul epithallino) ; sporœ 8"« inco- 

 lores ellipsoideœ vel subgloboso-ellipsoideae, longit. 0,009-11 

 millim., crass. 0,007-8 millim., paraphyses médiocres, epi- 

 ihecinm fuscescens , hypothecium incolor (vel subincolor , 

 perilhecium obscuratum vel subnigricans). lodo gelaiina hy- 

 menialis cœrulescens , deinde obscurata. — In summis jugis 

 diclis montibus nigris {negros), prope Mossâmedes , ad saxa 

 arcnacea. 



Obs. — Lichen incerlsc sedis iu série specierum ob spermo- 

 gonia ignola. Parlicuht' arenara^ granoste , supra quas na- 

 ?cuntur apothecia, ssepe quasi cimento albo thallino congluti- 

 uatse videnlur. Thallus hydrate kalico nonnihil flavescens. 



