98 E. A. Vainio, Pyrenocarpeae. 



Thallus sat tenuis, laevigatus, aut raro leviter verru- 

 culoso-inaequalis, continuus aut rarius rimulosus, fusco- aut 

 pallido- vel albido-cinerascens aut fusco-nigricans, hypothallo 

 indistincto. Apothecia dispersa aut sat crebra, verrucas for- 

 mantia 0.6 — 0.5 (— O.7) mm latas, mastoideas aut hemisphae- 

 ricas, basi praeruptas, amphithecio obducta thallino, tenui, 

 thallo concolore, laevigato aut leviter verrucoso, apice umbo- 

 nato O.15 — O.i mm lato et nigro nudoque, ostiolo haud aut 

 interdum leviter foveolato. Perithecium fuscum aut olivaceo- 

 fuscescens, integrum. Sporae 8:nae aut abortu pauciores, 

 demum olivaceo- vel fusco-nigricantes, ,,long. O.046 — 0.064 

 (raro — O.090), crass. O.023 — O.030 (raro — 0.038) mm" (secund. 

 Nyl. et Arn.), murales, cellulis numerosissimis. 



Distr. In saxis gneissaceis littoralibus ad Isojarvi in 

 Kuhmoin in Tavastia austr. (J. P. Norrlin). 



In specimine Fennico thallus est obscure cinerascens (in 

 specim. orig. „V. subumbrinae Nyl.", in Dovre lecto, albido- 

 cinerascens, in „Polybl. robusta Arn." pallido- vel nigricanti- 

 fuscescens). Amphithecium gonidia pleurococcoidea continens. Peri- 

 thecium globosum, apice anguste denudato, saepe nitido. Nucleus 

 albidus, haud resinoso-guttulosus, jodo roseus, haud caerulescens, 

 gonidiis hymenialibus nullis, at Gloeocapsae supra ostiolum et ad 

 apothecia interdum fortuitoque observantur. Periphyses numerosae, 

 constipatae, simplices, long. circ. O.030, crass. O.002 — O.0015 mm, 

 increbre septatae. Paraphyses membranis in gelatinam dissolutis, 

 cavitatibus cellularum striis distinctis indicatis. Asci monostichi 

 aut distichi, long. circ. O.21, crass. O.024 mm, cylindrici aut dif- 

 formes, membrana sat tenui. Sporae 8:nae aut abortu pauciores, 

 ellipsoideae, apicibus rotundatis, diu decolores, demum obscuratae, 

 jodo non reagentes, membrana tenui, haud gelatinosa, long. 0.064, 

 crass. O.030 mm. Gonidia pleurococcoidea, saepe 2 — 4-cellulosa. 

 In specim. Tirolensibus sporae secund. Arn. septis transversis 

 7—13. 



2. P. scotinospora (Nyl.) Hellb. 



Vet. Ak. F6rh. (1865) p. 478; Arn. Fl. 1870 p. 10, Lich. Tirol 

 XVIII (1878) p. 269, 284; Th. Fr. Polybl. Scand. (1877) p. 12; A. Smith 

 Mon. Brit. Lich. (1911) p. 305; Jatta Fl. It. Crypt. Lich. p. 858; Zschacke 

 Hedwigia 1914 p. 313. Verrucaria scotinospora Nyl. Lich. Scand. (1861) 

 p. 270, Lich. Lapp. Or. (1866) p. 169. Sphaerompliale scotinospora Mudd 



