Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 123 



Th. scotodes (Nyl.) Th. Fr. 



Points-fort. Scand. Vaxt. (1880) p. 99; Zschacke Hedwigia LX1I, 

 1920, p. 151. Vermcaria scotodes Nyl. Fl. 1868 p. 478; Hue Addend. II 

 (1888) p. 285; Norrl. Ber. Torn. Lappm. (1873) p. 348. 



„Thallus sat tenuis, passim rimulosus, fuscoumbrinus. Apothecia 

 innata in tuberculis mastoideis, basi latit. circ. 0.3 mm, vel obtuse 

 parum prominulis. Perithecium subincolor, supra solum fuscum vel 

 fuscescens. Sporae ellipsoideae vel oblongo-ellipsoideae, 3-septatae, 

 long. 0.024 — 0.030, crass. O.on — O.013 mm. Gelatina hymenialis jodo vinose 

 rubens." Sec. Nyl. 1. c. 



Distr. In saxis maritimis schistosis ad Lyngenfjord in Norvegia 

 parcissime lectum (J. P. Norrlin). 



Facie externa Verrucariam aethiobolam var. margaceam in memo- 

 riam revocans. Apothecia verrucas formantia hemisphaericas, usque 

 ad O.45 mm latas, basin versus amphithecio thallino tenui laevigato 

 obductas, vertice late denudato, margine ostiolari nee prominente, 

 nee impresso, ostiolo minuto, parum foveolato. Sporae sec. annot. 

 Nyl. apicibus rotundatis aut obtusis, loculis aequalibus. Thallus lae- 

 vigatus. 



2. Th. microstictum Vain. (n. sp.). 



Thallus macula caesio-cinerascente indicatus, hypo- 

 thallo indistincto. Apothecia fossulis minutis crebris sub- 

 strati calcarii omnino immersa, vertice nigro denudato, e 

 substrato haud prominente. Perithecium hemisphaericum, 

 lat. O.120 — O.150 mm, fuscescens, dimidiatum, basi albidum, 

 vertice convexo, haud impresso, ostiolo minutissimo, haud 

 foveolato. Sporae fusiformes, 1 — 3-septatae, long. O.015 — 

 O.016, crass. O.004 — O.ooe mm. 



Distr. Regio Aboensis: Kaukasalo in Finby (Vain.). 



In latere praerupto rupis calcariae. 



Thallus partim cellulis subglobosis, O.005 — O.009 mm crassis, 

 moniliformi-concatenatis, decoloribus. Apothecia fossulis immersa 

 circ. O.15 mm latis, demum vacuis. Perithecium lateribus basi 

 haud productis, ostiolo circ. O.015 mm lato. Nucleus jodo dilute 

 rubescenti-fulvescens. Sporae 8:nae, distichae, decolores, apicibus 

 sat acutis aut obtusis, long. O.015 — O.oie, crass. O.004 — O.ooe mm, 

 membrana tenui, haud gelatinosa, maxima parte simplices. 



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



Thelidium incavatum A. Smith Mon. Brit. Lich. II (1911) p. 299 

 pr. p. (sec. descr. ). 



