90 E. A. Vainio, Pyrenocarpeae. 



Formae sequentes, variationem thalli indicantes, inconstantes 

 sunt: 



F. continua Vain. Thallus continuus. E Kajaani, Ponoi et 

 Inari supra allata. 



F. irrigua Vain. Thallus areolatus et areolato-diffractus, 

 areolis vulgo 0.3 — 0.2 mm latis, angulosis, contiguis, planis aut 

 raro p. p. convexis. Lafo in Alandia, Mellersta Isskar et Lang- 

 skar ad Tvarminne. Mons Observatorii Helsingforsiae, Teurois 

 et alibi in Tammela, Kuhmoinen, Vuarunvuori et Paivakunta in 

 Korpilahti, Jurva in Ostrobotnia austr., Lappeenranta, Vuontisjarvi 

 in Enontekiainen (loca supra indicata). Hue etiam Fr. Lich. Suec. 

 Exs. n. 415 (in herb. Nyl.) pertinet. 



F. rimulosa Vain. Thallus crebre rimulosus vel rimoso- 

 diffractus. Est f. frequentior typicaque hujus speciei. Loca natalia 

 supra indicata. 



Obs. Lichen umbrinus Ach., Lich. Suec. Prodr. (1798) p. 14, secund. 

 specimen inferius .e Suecia in herb. Ach. ad Verrucariam aethiobolam 

 (Wahlenb.) f. primariam Vain, pertinet (sporis simplicibus, long. O.ow, 

 crass. O.007 mm); specim. superius e Suecia, apotheciis destitutum, 

 conidiis oblongis, rectis aut leviter curvatis, long. O.006 — O.005, crass. 

 O.0015 mm, thallo minutissime areolato instructum, indeterminabile sit. 



2. St. inconversa (Nyl.). 



Verrucaria inconversa Nyl. Fl. 1875 p. 362; Hue Add. Lich. Eur. II 

 (Fl. 1888) p. 273. V. umbrina *inconversa Nyl. in Norrl. Symb. Fl. La- 

 dog.-Kar. (1878) p. 32. 



Thallus sat tenuis aut modice incrassatus, rimoso- aut 

 areolato-diffractus, fuscus aut fusco-nigricans, opacus. Apo- 

 thecia dispersa, verrucas formantia hemisphaericas aut 

 mastoideo-hemisphaericas, 0.3— 0.4 mm latas, lateribus baud 

 aut sat praeruptis, amphithecio obducta thallino, tenui, lae- 

 vigata, thallo concolore, apice plus minus late denudato 

 nigricanteque, ostiolo minuto, raro leviter foveolato. Peri- 

 thecium superne late fusco-fuligineum, basi pallidum. Sporae 

 binae, decolores, „long. O.030 — O.055, crass. O.on — O.ois mm" 

 (sec. Nyl. 1. c). Gonidia hymenialia globosa simpliciaque 

 diam. O.0025 — O.004 (O.002) mm, partim 1-septata et subglobosa 

 ellipsoideaque, long. O.004 — O.005, crass. O.003 — O.0035 mm. 



Distr. In rupe granitica, littorali ad rivulum in Tali 

 prope Helsingforsiam (Vain.) et in Kvrkslatt (A. Kullhem) 



