172 E. A. Vainio, Pyrenocarpeae. 



Distr. Loco subumbroso in rupe argillaceo-schistosa 

 prope Sirkela in regione coniferarum mixtarum in Kuusamo 

 (Vain.). 



Haec species, intermedia inter Beloniam russulam et sect. 

 Raphidisegestriam Porinae, Beloniam et Porinam connectit. Gonidia 

 ad Trentepohliam iolithum pertinentia, cellulis anguloso-subglobosis 

 aut rarius ellipsoideis, concatenatis aut solitariis, diam. O.020 — O.016 

 ( — O.oh) mm, membrana vulgo sat crassa. Apothecia macula fusco- 

 nigricante O.320 — O.200 mm lata, extus stratum colorante corticale 

 chondroideum pachydermaticumque, cavitatibus cellularum minu- 

 tissimis rotundatisque instructum, verticem amphithecii et peri- 

 thecii obtegens. Perithecium ceterum albidum, subglobosum, lat. 

 circ. 0.4 mm. Amphithecium gonidia continens. Periphyses haud 

 evolutae. Nucleus albus, guttulas resinosas haud continens, jodo 

 caerulescens (aut demum violascens in solutione magis caustica). 

 Paraphyses numerosissimae, simplices, crass. O.0007 mm. Asci 

 fusiformes, long. 0. 100— 0. 120, crass. O.010 — O.012 mm, membrana 

 sat tenui. Sporae 8:nae, vulgo rectae, apicibus sat acutis aut 

 apice superiore obtuso, septis vulgo 8—11, cellulis cylindricis, 

 vulgo aeque longis. 



3. Porina (Ach.) Vain. 



Ach. Syn. Lich. (1814) p. 109, pro min. p. (Lich. Univ., 1810, p. 60); 

 Fee Ess. Crypt. Ecorc. (1824) p. 80 p. p.; Mass. Ricerch. (1852) p. 190; 

 Mull. Arg. Lich. Beitr. (Fl. 1883) n. 644 (em.), Pyr. Cub. (1885) p. 376, 

 398, Pyr. Feean. (1888) p. 4, 20; Vain. Etud. Lich. Bres. II (1890) p. 219; 

 Zahlbr. Ascolich. (Engl. Naturl. Pflanzenfam. 217 Lief., 1903, p. 62, 66). 

 Segestria Fr. Syst. Orb. Veg. (1825) p. 263; Mass. 1. c. p. 158; Trev. 

 Consp. Verr. (1860) p. 5; Th. Fr. Gen. Heterolich. (1861) p. 106(„jam. 

 generi Arachnidarum data", Nyl. Lich. Scand. p. 292). Sphaeromphale 

 Reichenb. Consp. Regn. Veg. (1828) p. 20 (= Segestria Fr.). Segestrella 

 Fr. Lich. Eur. Ref. (1831) p. 460. Sagedia Mass. 1. c. p. 159; Naeg. in 

 Hepp Flecht. Eur. (1853) tab. II; Tuck. Gen. Lich. (1872) p. 263 p. p. 

 (haud Ach. Lich. Univ., 1810, p. 71, 327). Verrucaria stirps sive subg. 

 Porinula Nyl. Fl. 1881 p. 453; Hue Addend. II (1888) p. 290. 



Thallus crustaceus, uniformis, ambitu haud effiguratus. 

 Apothecia simplicia. Paraphyses numerosae, vulgo simplices, 

 haud ramoso-connexae. Sporae 8:nae, decolores, fusiformes 

 aut aciculares bacillaresve aut oblongae, transversim 1 — pluri- 

 septatae, loculis subcylindricis, haud lenticularibus, endosporio 

 haud incrassato. Gonidia ad Trentepohliam umbrinam et ioli- 



