154 E. A. Vainio, Pyrenocarpeae. 



constrictas, amphithecio thallino, thallo concolore obducta, 



vertice denudato, nigricante, 0.3 — O.i mm lato, planiusculo 



aut convexo, vulgo distincte limitato, margine ostiolari haud 



prominente, ostiolo primum minutissimo, demum interdum 



0.070 — O.080 mm lato. Perithecinm subglobosum, albidum 



pallidumve, vertice fusco-nigricante. Paraphyses numerosae, 



simplices aut parce ramosae. Asci cylindrici. Sporae 8:nae, 



monostichae, vulgo fusiformes aut fusiformi-ellipticae, apici- 



bus vulgo obtusis, murales, long. O.016 — O.022, crass. O.007 — 



O.011 („long. — O.033, crass. — O.015 mm" sec. Arn. Lich. Tirol 



XVIII p. 555). Gonidia pleurococcoidea. 



Distr. In lateribus umbrosis rupium saxorumque 



graniticorum et gabbroiticorum et granuliticorum locis 



numerosis, praesertim in silvis mixtis collecta. Nylandia: 



Ad Meilans et Hummelviken prope Helsingforsiam (Vain.). 



Tavastia austr.: Hersala et Tiirismaa in Hollola (Vain.), 



Evo (J. P. Norrlin et Vain.), Jokioinen in Padasjoki (Vain.), 



Sutoisenniemi in Korpilahti (Vain.). Ostrobotnia Kajanensis: 



Kylmala in Kuhmo, Laakso et Lehtovaara in Kianta (Vain.). 



Kuusamo: In reg. abietina montis Narankavaara (Vain.). 



Lapponia Inarensis: In reg. subalpina montium Hammas- 



tunturit (Vain.). 



Facie externa variabilis, sed formae parum constantes. — 

 Thallus KHO non reagens. Perithecium KHO non reagens- 

 Nucleus albidus, haud resinoso-guttulosus, jodo sat dilute cae. 

 rulescens. Paraphyses crass. O.ooos— O.0005 mm. Asci membrana 

 in apice parum incrassata. Sporae apicibus raro rotundatis, 

 membrana modice incrassata, haud gelatinosa, jodo haud rea- 

 gentes, cellulis haud numerosis, demum in seriebus transversis 

 vulgo 6 — 7, secund. Arn. etiam 10. Gonidia globosa, diam. 

 O.006 — O.012 mm, vulgo simplicia. 



3. Th. leucothelioides Vain. (n. sp.). 



Thallus tenuis aut tenuissimus, parce verruculoso- 

 inaequalis vel verruculis depressis albidis pallidisve supra 

 hypothallum albidum tenuissimum dispersis. Apothecia 

 sparsa, thallo immersa, punctis nigricantibus O.15 — O.i mm 

 latis indicata. Perithecium subglobosum, in lamina tenui 



