Acta Societatis pro Fauna et Flora Fennica 49, N:o 2. 25 



immersa, vertice demum verruculam O.002 — O.0015 mm latam 

 fuscescentem nigricantemve formante. Perithecium apice 

 fuscescens rufescensve, ceterum albidum pallidumve aut 

 raro maculis obscuratis plus minusve latis. Sporae ob- 



longae. 



Distr. Ad terram nudam humosam aut arenariam aut 

 calcariam aut muscos destructos in fissuris rupium et ad 

 terram locis apricis subhumidis. Alandia (Edvin Nylander). 

 Regio Aboensis: Insula Jurmo in Korpo (Edvin Nylander). 

 Nylandia: Mjolo (Vain., H. Hollmen), Torr-Mjolo (W. Nylan- 

 der), Stromsby in Kyrkslatt (Vain.). Karelia Ladogensis: 

 Liikolanmaki prope Sortavala (J. P. Norrlin), „Lapicidina 

 marmorea in Ruskeala" (Norrl. Symb. Fl. Ladog.-Kar. p. 32). 

 Karelia Onegensis: Ad Mokko et calcefodinam in Suojarvi 

 (Norrl), Jankajarvi (Norrl.), „ad terram locis calcariis in 

 Valkeamaki et Mundjarvi" (sec. Norrl. Fl. Kar. Oneg. II p. 38). 

 Ostrobotnia Kajanensis: Kianta (F. Silen). Lapponia Kemen- 

 sis: Kalkkivaara in reg. conif. mixt. in Sodankyla (Vain.). 

 Lapponia Ponojensis: Katschkowa, Pialitsa et Ponoi (N. 

 I. Fellman). Lapponia Enontekiensis: In reg. pinifera 

 ad Hetta in Pahtavaara et in reg. betulina ad Kilpiseno 

 (Norrl.). 



Thallus squamis circ. 5—1 mm longis latisque, laciniis 

 0.2 — 1.5 mm longis, crass, siccus circ. O.200, humidus O.280- 

 O.300 mm, superne vulgo tenuissime pruinosus, raro denudatus, 

 hyphis hypothallinis usque ad marginem instructus, O.003 — O.0035 

 mm crassis, membrana modice incrassata. Perithecium lat. circ. 

 O.2—O.22 mm, apice fuscescens rufescensve, basi saepe demum 

 usque ad zonam nigricantem strati corticalis inferioris continua- 

 tum, ita ut basi nigricans apparet, quare ab auctoribus nonnnllis 

 integre fuligineum erronee descriptum est (conf. Leight. Brit. 

 Angioc. Lich. tab. VII f. 1, Catopyrenium Koerb. Syst. Lich. 

 Germ. p. 324). Nucleus jodo dilute violascens, saepe basi cae- 

 rulescens. Periphyses numerosae, constipatae, long. circ. O.oos, 

 crass. O.002 mm. Paraphyses in gelatinam diffluxae, striis indi- 

 catae. Asci oblongi aut subclavati aut cylindrici, long. circ. O.oeo, 

 crass. O.016 mm, membrana tota gelatinosa, modice incrassata. 

 Sporae 8:nae, distichae, decolores, simplices, saepe guttulas 

 vacuolosve continentes, quare interdum uniseptatae apparent, 

 oblongae, apicibus obtusis, long. O.oie — O.023, crass. O.ooe — O.007 mm 



