92 E. A. Vainio, Pyrenocarpeae. 



Thallus tenuis (aut sat tenuis), continuus aut rarius 

 areolato-rimosus, fusco-nigricans aut fuscescens aut raro 

 pallido-olivaceus, vulgo opacus. Apothecia dispersa aut sat 

 crebra, verrucas formantia mastoideo-hemisphaericas, 0.5 — 

 0.3 mm latas, lateribus haud praeruptis, amphithecio obducta 

 thallino, tenui, laevigato, thallo concolore, apice vulgo demum 

 late denudato nigricanteque, ostiolo minuto mediocrive, saepe 

 demum leviter foveolato. Perithecium parte superiore fusce- 

 scens aut violaceo-fuscescens, parte inferiore pallidum aut 

 dilute coloratum tenueque. Sporae binae, rufescentes fusce- 

 scentesve, long. O.032 — O.044, crass, circ. O.oh — O.017 mm. 

 Gonidia hymenialia globosa aut subglobosa, diam. vulgo 

 O.002 — O.0025, rarius O.003 — O.004, partim 2 (•— 4)-cellulosa. 



Distr. Ad rupes et saxa littoralia granitica, gneissacea 

 et syenitica lacuum rivulorumque crescit. Regio Aboensis: 

 Mustasaari in Isosaari in Lohja (C. E. Boldt). Nylandia: 

 Dickursby (Norrl., H. L. F. n. 399). Tavastia austr. : Mylly- 

 kyla in Tammela (A. Kullhem), Kivisto in Padasjoki (Vain.), 

 Evo (Norrl.), Sutoisenniemi in Korpilahti (Vain.). Tavastia 

 bor. : Paivakunta (E. Hayren), Piilila in Korpilahti (Vain.), 

 Tourujoki in Jyvaskyla (Vain.). Karelia Olonetsensis: Vos- 

 nessenje (F. Elfving). Karelia Onegensis: Petrosavodsk (A. 

 Kullhem). Ostrobotnia bor.: Hupisaari in Oulu (M. E. Huu- 

 monen). Lapponia Kemensis: Huukki in Kolari (ad saxa 

 calcaria, Norrl.). 



Loca natalia sec. determinationes Nylandri indicata sunt, 

 nam haec species mihi dubia videtur, notis nimis vagis a St. 

 fissa differens. Si gonidia hymenialia revera ad aliam speciem, 

 quam in St. fissa, non pertineant, St. elegans est variatio parum 

 constans St. fissae. — Nucleus albidus, parce resinoso-guttulosus, 

 jodo caerulescens. Paraphyses in gelatinam diffluxae, striis 

 tenuissimis indicatae. Periphyses numerosae, constipatae, long - , 

 circ. O.035, crass. O.002 mm. Sporae oblongae, apicibus rotundatis, 

 cellulis numerosissimis, seriebus cellularum partim irregularibus, 

 saepe circ. 10, membrana tenui. Gonidia thalli pleurococcoidea, 

 vulgo subglobosa simpliciaque, long. O.007 — O.010, crass. O.005- — 

 O.008 mm, p. p. 1-septata et glomerulosa, membrana modice in- 

 crassata. Gonidia hymenialia saepe demum 2-cellulosa et long. 

 0.004 — O.007, crass. O.003 — O.005 mm, interdum 4-cellulosa. „Ste- 



