Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 211 



Thallus modice incrassatus aut crassus tenuisve, ver- 

 ruculoso-inaequalis aut verruculosus, dispersus, obscure 

 cinereo-virescens aut olivaceus cinerascensve. Apothecia 

 vulgo parva, sessilia, late adnata, basi leviter constricta, 

 disco convexo aut primum depresso-convexo planiusculove, 

 nigricante aut fusco-nigricante aut raro fusco-rufescente, 

 margine indistincto aut tenuissimo et demum excluso, sub- 

 concolore. Hymenium tenue aut sat tenue. Epithecium 

 aeruginosum aut olivaceum aut fuscescens pallidumve, KHO 

 parum reagens. Hypothecium pallidum aut decoloratum, 

 plectenparenchymaticum. Perithecium pallidum aut partim 

 olivaceo-pallidum vel dilute rufescens, KHO non reagens, 

 subplectenparenchymaticum. Sporae aciculari-vermiculares, 

 spiraliter contortae aut raro subrectae, longitudine medio- 

 cres aut sat breves, sat tenues aut modice incrassatae, 

 pauci-septatae aut pluri-septatae. 



Distr. Praesertim ad corticem Alni, saepe etiam ad 

 saxa et rupes et ad saepimenta lignea vetusta crescit, raro 

 ad corticem Salicis capreae lecta. In provinciis meridio- 

 nalibus et mediis satis est frequens, septentrionem versus 

 rarescens et in Lapponia rara. 



Thallus opacus, hypothallo indistincto aut obscure cine- 

 rascente. Apothecia sparsa aut crebra aut conferta vel tuber- 

 culoso-confluentia, simplicia lat. O.is — 0.3, rarius — 0.8 mm, crass, 

 circ. 0.100 — 0.180 mm, baud pruinosa, disco nitido aut opaco, 

 margine baud prominente, vulgo disco concolore. Hymenium 

 0.040 —0.050 mm crassum, jodo caerulescens, dein vinose rubens. 

 Hypothecium pallidum aut decoloratum, KHO non reagens, 

 plectenparenchymaticum, cavitatibus cellularum rotundatis aut 

 difformibus, O.oois— 0.oo5 mm latis, in series irregulariter verti- 

 cales dispositis, membranis conglutinatis, leviter aut modice in- 

 crassatis. Perithecium tenue, 0.030— O.045 mm crassum, ex hyphis 

 formatum irregulariter radiantibus, membranis leviter aut modice 

 incrassatis (comparate sat tenuibus), cavitatibus cellularum ob- 

 longis aut ellipsoideis rotundatisve, O.0015 — O.0025 mm latis, palli- 

 dum aut in margine olivaceo-pallidum vel dilute rufescens, KHO 

 non reagens. Paraphyses arete cohaerentes, simplices aut rarius 

 ramosae aut parcissime ramoso-connexae, crass. O.0008 — O.ooi mm, 

 apice baud aut leviter clavato-incrassatae (O.0015 — O.003 mm). 

 Asci clavati, long. O.040 — O.oso, crass. O.012 — O.ou mm. Sporae 



