Acta Societatis pro Fauna et Flora Fennica 49, N:o 2. 93 



rigmata constricte pauciarticulata, articulis conidia efferentibus. 

 Conidia cylindrico-oblonga, recta, long. O.003 — O.004, crass. O.001 

 mm" (sec. annot. Nyl. in n. 2318 et 2321 in herb. suo). 



4. St. frustulenta Vain. (n. sp.). 



Thallus crassus, verrucoso-areolatus, areolis convexis 

 aut depresso-convexis, contiguis, fuscescens, opacus, verru- 

 cis fertilibus latioribus crassioribusque, vulgo apothecia 

 solitaria continentibus. Apothecia verrucis thallinis semi- 

 immersa, verruculas formantia hemisphaericas, circ. 0.3 

 ( — O.25) mm latas, nigras, nudas, opacas, margine ostiolari 

 nee prominente nee impresso, ostiolo minuto, haud foveo- 

 lato. Perithecium globosum, apice rubricoso-rufescens, 

 ceterum pallidum. Sporae binae, rufescentes, long. circ. 

 O.040 — O.054, crass. O.016— O.021 mm. Gonidia hymenialia glo- 

 bosa aut parcius subglobosa, simplicia diam. O.0025 — O.003 

 (O.002 — O.004) mm, parcius 1-septata et ellipsoidea, long. O.005 

 ( — O.006), crass. O.0035 (O.003 — O.004) mm. 



Distr. In latere irrigato rupis graniticae in Hiekka 



Viburgi in Karelia austr. (Vain.). Secund. determ. Nylan- 



dri est „V. clopima", quo nomine in herb. Nyl. (n. 2359) 



adest et in Vain. Lich. Vib. commemoratur. Supra saxa 



diabasica littoralia in promontorio Ascheb (Norrl.) in Karelia 



Onegensi (sec. determ. Nylandri „Verr. areolata" in Norrl. 



Fl. Kar. Oneg. II p. 38). 



Habitu subsimilis est St. clopimae var. areolatae. Verrucae 

 fertiles lat. 0.8 — 0.3 mm, sat irregulares, verrucae steriles diam. 

 0.2 — 0.3 mm. Hypothallus nigricans parce conspicuus. Nucleus 

 albidus, parce resinoso-guttulosus, jodo caerulescens. Paraphyses 

 in gelatinam diffluxae, striis tenuissimis abruptis indicatae. 

 Periphyses constipatae. Sporae ellipsoideae, apicibus rotundatis, 

 cellulis numerosissimis, in seriebus circ. 8 — 12, membrana haud 

 gelatinosa. Gonidia thalli pleurococcoidea, vulgo globosa simpli- 

 ciaque, diam. O.005 — O.006 mm, p. p. 2-cellulosa, membrana modice 

 incrassata, parce etiam majora, membrana incrassata. Gonidia 

 hymenialia membrana sat tenui. — Verrucis thalli convexis et 

 apotheciis semiimmersis a St. fissa f. irrigua differt, forsan in 

 earn transiens. 



