144 E. A. Vainio, Pyrenocarpeae. 



Distr. Ad corticem Quercus, Aceris, Ulmi, Tiliae, 

 Salicis, Alni, Sorbi et Coryli rara. Regio Aboensis: Ad 

 Niematti in Toivosenkyla in Livoluoto in par. Askainen 

 (K. Linkola). Nylandia: Soderkulla in Sibbo (K. Linkola), 

 Helsingforsia (W. Nyl.), Gesterby in Kyrkslatt (A. Kullhem), 

 Karabacka in Esbo (W. Nyl.). Karelia austr.: Luurinsaari 

 ad Kirjola in Kakki (C. E. Boldt), Vasikkasaari in Koivisto 

 (Edvin Nylander). Karelia Ladogensis: Valanio (W. Nyl.). 

 Tavastia austr.: Saukoniemi in Tammela (A. Kullhem), 

 Uskila in Hollola (Norrl. Bidr. Sydostr. Tav. Fl. p. 195). 

 Karelia Onegensis: Mundjarvi (J. P. Norrlin). Savonia bor.: 

 Harjula in Savilahti prope Kuopio (K. Linkola). 



Thallus albidus et habitu lichenoides, sed gonidiis destitu- 

 tus, saepe tamen partibus lichenosis alienis immixtus. Etiam 

 sporarum indole haec species a Pyrenulis differt, et inter Helle- 

 nes, si gonidiis instructa esset, genus autonomum constitueret. 

 Paraphyses crass. O.ooi mm. Nucleus jodo non reagens. Asci 

 membrana tenui. Sporae 8:nae, apicibus acutis aut rarius ob- 

 tusis, 3 — 5-septatae in eodem apothecio, loculis 2 mediis reliquis 

 multo longioribus, membrana sat tenui aut modice incrassata, 

 strato gelatinoso haud induta, observante Nyl. (Lich. Paris p. 128) 

 „long. 0.oi6 — 0.030, crass. O.oot— O.oio mm". 



Obs. Verrucaria farrea Ach., Meth. Lich. (1803) p. 115, secundum 

 specimen orig. „in lignis subputrescentibus a Swartz" collectum ad 

 Leptosphaeriam leucoplacam (Wallr.) non pertinet, in specimine dextro 

 et superiore sinistro sporis simplicibus decoloribus instructa (inferius 

 sinistrum est male evolutumi. Specimen corticola, thallo alieno liche- 

 nis maxima parte obductum, non est originale. 



4. Microthelia (Koerb.) Vain. 



Mull. Arg. Pyr. Cub. (1885) p. 376, 416 (p. p.), Lich. Beitr. (Fl. 

 1885) n. 886—889 (em.), Pyr. Feean. (1888) p. 4, 38 (em.), Consp. Lich. 

 Nov. Zel. (1894) p. 16 et 93 p. p.; Sydow Flecht. Deutschl. (1887) p. 

 270 p. p.; Vain. Etud. Lich. Bres. II (1890) p. 232; Zahlbr. Ascom. 

 (1903) p. 62 p. p.; Jatta Fl. It. Crypt. Ill (1911) p. 896 p. p.; A. Smitli 

 Mon. Brit. Lich. II (1911) p. 330 p. p. (haud Koerb. Syst. Lich. Germ., 

 1855, p. 372, ad Didymosphaeriam et Tichothecium spectans). Micro- 

 tlwliopsis Mull. Arg. Lich. Beitr. (Fl. 1890) n. 1548. 



Thallus crustaceus, uniformis. Gonidia pleurococcoidea 

 aut ab Heterothallo aut a Phycopeltide praedita. Apothecia 

 simplicia. Perithecium rectum, fuligineum. Paraphyses 



