174 E. A. Vainio, Pyrenocarpeae. 



Distr. Ad corticem vetustum Alni socia Parmeliellae 

 triptophyllae prope Dianovagora in Karelia Onegensi (Th. 

 Simming). 



Thallus vulgo leviter nitidus. Nucleus subglobosus, jodo 

 non reagens, metaplasmate rubescente. Paraphyses simplices. 

 Asci cylindrico-fusiformes, apice rotundato, membrana modice 

 incrassata, long. circ. O.oso, crass. O.012 mm. Sporae 8:nae, 

 distichae, sec. Arn. „crass. O.0045— O.005 mm, rarius 9-septatae", 

 in specim. a Simming lectis „long. O.034 — O.044, crass. O.007 — O.oos 

 mm, septis saepe nonnihil irregularibus" (sec. Nyl.). Gonidia 

 cellulis O.oos — O.012 mm crassis. In Hepp Flecht. Eur. n. 708 

 perithecium saepe margine ostiolari minutissime umbonato. 



Obs. Vermcaria leioplacoides Vain. (Adj. Lich. Lapp. II p. 183) 

 est autonoma species Sagiolechiae Mass., excipulo albido a S. protu- 

 berante (Ach.) differens. — Petractis clausa (Hoffm.) Arn. (exanthematica 

 Sm.), gonidiis scytonemeis instructa, ad Collemaceas pertinet. 



2. P. furvescens (Nyl.) A. Sm. 



Mon. Brit. Lich. II (1911) p. 338. Vermcaria furvescens Nyl. Fl. 

 1864 p. 356; Norrl. Ber. Torn. Lapp. (1873) p. 343; Vain. Adj. Lich. 

 Lapp. II (1883) p. 185. Segestria Th. Fr. Points-Fort. Skand. Vaxt. 

 (1880) p. 104. 



Thallus sat crassus, verruculoso-inaequalis, diffractus, 

 olivaceo- vel cinereo-fuscescens, opacus, hypothallo in- 

 distincto. Apothecia semiimmersa, verrucas formantia sub- 

 hemisphaericas, 0.4— 0.3 mm latas, basin versus sensim 

 dilatatas aut sat praeruptas, amphithecio thallino, thallo 

 concolore anguste tenuiterque obvelatas, vertice late denu- 

 dato, atro, leviter nitido, margine ostiolari demum saepe 

 leviter impresso, ostiolo modice dilatato. Perithecium glo- 

 bosum, rubricoso-fuligineum, integrum, KHO non reagens. 

 Sporae „fusiformes, 5-septatae, long. O.025— O.oss, crass. 

 0.005—0.008 mm, apicibus acutis aut altero apice obtuso, 

 loculis sat aequalibus, membrana sat tenui, haud gelati- 

 nosa" (Nyl. in Mus. Fenn.). Gonidia a Trentepohlia iolitho 

 praedita. 



Distr. Supra muscos putridos in latere subumbroso 

 rupis ad Kelottijarvi in Lapponia Enontekiensi (J. P. Norrlin). 

 Primum in Scotia ab Jones collecta. 



