64 E. A. Voinio, Pyrenocarpeae. 



Asci ventricoso-clavati, membrana gelatinosa. Sporae 8:nae, 

 distichae, decolores, simplices, apicibus rotundatis aut obtusis, 

 membrana interdum jodo vinose rubente. Pars inferior perithecii 

 albida, interdum macula tenui angustaque fuliginea instructa sub- 

 globosa, lat. - 0.360 mm. Pars superior ejus fuliginea scutulum 

 format convexum, lateribus dilatatis insctructum, 0.4 — O.54 mm 

 latum, quod a Garov. 1. c. p. 2 nominatur „epithecium" et a Th. 

 Fr. Lich. Arct. p. 252 „amphithecium". 



Obs. F. ferruginosa Nyl. (V. rupestris * V. muralis f. ferruginosa 

 Nyl. Lich. Scand., 1861, p. 275), thallo tenui, toto aut tantum circa apo- 

 thecia ferruginoso-rubricoso instructa, supra est indicata. — V. muralis 

 *grisescens Nyl. in coll. Lojka n. 3541 (Hulting Dalslands Lafvar, 1900, 

 p. 85), thallo griseo-cinerascente aut sordide albicante instructa (peri- 

 thecium dimidiatum, sporae long. O.022 — O.030, crass. O.on — O.oh mm sec. 

 annot. Nyl.), a typo satis non differens, etiam in Fennia provenit. 



Ser. B. Perithecium lateribus haud anguloso-productis. 



25. V. mucosa Wahlenb. 



in Ach. Meth. Lich. Suppl. (1803) p. 23, Lich. Univ. (1810) p. 282, 

 Syn. Lich. (1814) p. 93; Wahlenb. PI. Lapp. (1812) p. 466; Nyl. Exp. 

 Pyrenoc. (1858) p. 28 (excl. var.); Th. Fr. Lich. Arct. (1861) p. 269; 

 Vain. Adj. Lich. Lapp. II (1883) p. 177; A.Smith Mon. Brit. Lich. (1911) 

 p. 277. Verrucaria ceathocarpa * V. mucosa Nyl. Lich. Scand. (1861) p. 

 275. V. margacea var. hydrela Nyl. Lich. Lapp. Or. (1866) p. 170 (haud 

 V. hydrela Ach.). 



Exs. Th. Fr. Lich. Scand. Exs. Ill (1865) n. 75. — Larbal. Lich. 

 Herb. VII (1880) n. 278. — Arn. Lich. Exs. (1886) n. 1190. Lojka 



Lich. Univ. V (1880) n. 245. 



Thallus sat tenuis aut modice incrassatus, continuus 

 (aut raro rimosus), laevis, olivaceo- aut viridi-nigricans aut 

 raro plumbeus, leviter nitidus aut opacus. Apothecia crebra 

 aut sat dispersa, thallo immersa aut vertice demum emer- 

 gente, amphithecio thallino haud evoluto. Perithecium lat. 

 O.1—O.15 mm, globosum, dimidiatum, parte superiore plus 

 minusve late fusco-fuligineum, parte inferiore albidum, la- 

 teribus haud productis, vertice convexo, margine ostiolari 

 haud prominente. Sporae ellipsoideae, long. O.007 — O.015, 

 crass. O.004 — O.oos mm. 



Distr. Ad saxa dioritica saepe inundata in littore 

 Maris Albi prope Knjasa in Karelia Keretina (N. I. Fellman). 



