Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 303 



Thallus crustaceus, uniformis, verruculosus, verruculis 

 minutissimis, convexis aut subglobosis, fuscescentibus aut 

 cinereo-fuscescentibus aut persicino-albidis albidisve, di- 

 spersis, baud pruinosis, jodo non reagentibus, hypothallo 

 nigricante vel indistincto. Apothecia mediocria aut sat 

 parva, inter verrucas thalli sita, bene prominentia, nigra, 

 nuda, primum plana tenuiterque marginata, dein convexa 

 immarginataque. Epithecium rubricoso- aut subviolaceo- 

 fuligineum, Sporae 8:nae, decoloratae, long. O.oi?— O.028 mm 

 ( — 0.036 mm sec. annot. Nyl.), crass, O.009 — O.012 mm ( — O.017 

 mm sec. Nyl.), murali-divisae, cellulis vulgo demum nu- 

 merosis. 



Distr. Ad scopulos et saxa, granitica et gneissacea, et 

 in latere rupis collectum. Tb.: Piilila in Korpilahti („L. ro- 

 ridula" sec. determ. Nylandri in Vain. Fl. Tav. Or. p. 117). 

 OKaj.: Lehtovaara in Kianta (Vain.). Kuus.: In reg. 

 subalp. mentis Mantytunturi (Vain.). Lin.: Veskoniemi 

 (Vain.). 



Thallus verruculis O.2 — O.i mm latis, KHO non reagentibus, 

 rare p. p. depresso-convexis. Apothecia lat. O.7 — 0.8 ( — 1) mm, 

 dispersa, late adnata, interdum basi modice constricta, baud pa- 

 pillata. Perithecium rubricoso-fuligineum. Hypothecium rubricoso- 

 fuligineum. Partes obscuratae apotheciorum KHO distinctius et 

 pulchrius subviolaceo-rubricosae. Hymenium circ. O.080 — O.090 mm 

 crassum. Sporae septis transversis saepe 4, cellulis saepe diu 

 paucis, strato grelatinoso sat tenui. Gonidia cystococcoidea, glo- 

 bosa et diam. 8 — 18/6, aut ellipsoidea et diam. 15X8, 14X10, 

 20X12(M, simplicia, vacuolis lateralibus, membrana modice aut 

 rarius magis incrassata. — Verruculis minutissimis, dispersis 

 haec species etiam sterilis facile recognita. 



13. Rh. lapillorum Vain. 



Lecidea porphyrostrota f. lapillorum Vain. Adj. Lich. Lapp. II 

 (1883) p. 140. 



Thallus crustaceus, uniformis, verruculosus, verruculis 

 minutissimis granuliformibusque, convexis, obscure cinereis 

 cinerascentibusve, dispersis, baud pruinosis, jodo non rea- 

 gentibus, hypothallo indistincto. Apothecia minuta, inter 



