192 E. A. Vainio, Pyrenocarpeae. 



Distr. In thallo et apotheciis Ochrolechiae tartareae 

 in lateribus rupium in reg. subalpina montis Nuorunen 

 in Kuusamo et in reg. pinifera montis Ruoptuinvaara in 

 Lapponia Inarensi (Vain.). In thallo Lecideae cinnabarinae 

 ad corticem Juniperi in reg. subalpina jugi Suoloselka in 

 Lapponia Kemensi (Vain.). 



Nucleus jodo haud reagens aut metaplasma ascorum rube- 

 scens. Asci long. 0.060 — O.070, crass. O.010 mm, membrana tenui. 

 Paraphyses numerosae, simplices, crass. O.001 mm, gelatinan 

 hymenialem percurrentes, ascos longiores. Periphyses haud evo- 

 lutae. Sporae distichae, decolores, loculis cylindricis, aeque longis, 

 apicibus obtusis, membrana tenui. Perithecium substrato immer- 

 sum aut demum vertice leviter prominente, nigro, nudo, margine 

 ostiolari haud prominente. Mycelium albidum, in partibus in- 

 terioribus substrati crescens. Porinis est proxima inter lichenes. 

 Sporae decolores, quare nee ad Leptosphaeriam nee ad Xenosphae- 

 riam pertinet. 



7. Metasphaeria Sacc. 



Syll. Fung. II (1883) p. 156 p. p.; Karst. Rev. Ascom. (Act. Soc. 

 F. et Fl. Fenn. II, 1885) p. 21, 43. 



Genus gonidiis destitutum, ad fungos pertinens. Sporae 

 8:nae, decolores, ellipsoideae aut oblongae aut ovoideo- 

 oblongae aut fusiformes, 3— pluri-septatae, loculis haud lenti- 

 cularibus. Paraphyses numerosae aut parce evolutae (aut 

 raro obsoletae). Corticolae, caulicolae et foliicolae. 



1. M. decolorella (Nyl.) Vain. 



Verrucaria decolorella Nyl. Fl. 1864 p. 355, Lich. Lapp. Or. (1866) 

 p. 172; Norrl. Ber. Torn. Lapp. (1873) p. 343. 



Thallus macula albida vel sordide albida indicatus aut 

 indistinctus. Apothecia basi substrato immersa, verrucas 

 formantia hemisphaericas, circ. O.ibs— 0.3 mm latas, nigras, 

 nudas, opacas. Perithecium subgloboso-hemisphaericum, 

 superne cyanescenti-aeruginosum, interne decoloratum, dimi- 

 diatum, margine ostiolari nee prominente nee impresso, 

 ostiolo circ. O.040 mm lato. Asci cylindrici, membrana sat 

 tenui. Paraphyses ramoso-connexae, numerosae. Sporae 

 distichae, ovoideo-fusiformes, 5-septatae, long. circ. O.026, 



