194 E. A. Vainio, Pyrenocarpeae. 



Distr. Ad ramos truncosque tenuiores Betulae glutino- 

 sae et praesertim B. nanae in turfosis lucisque in partibus 

 septentrionalibus Fenniae haud rara videtur. Collecta etiam 

 in ramulis Juniperi in Lapponia, et ad corticem Myricae in 

 Gallia, Germania et Suecia, et ad Cembras in Italia. Ostro- 

 botnia Kajanensis: Kylmala in Kuhmo, prope Templum et 

 Lehtovaara in Kianta (Vain.). Kuusamo: In regione abietina 

 montis Iivaara (Vain.). Lapponia Enontekiensis: In regione 

 subalpina prope Vittanki in Enontekiainen (J. P. Norrlin). 

 Lapponia Inarensis: In regione coniferarum mixtarum et 

 subalpina montium Hammastunturit (Vain.). 



Perithecium KHO aeruginosum, extrorsum basi aaguste atte- 

 nuato-productum. Asci long. O.050 — O.070, crass. O.011 — O.016 mm. 

 Paraphyses simplices aut furcatae aut parce ramulosae. Nucleus 

 albidus, jodo non reagens, metaplasmate ascorum subrubescente. 

 Sporae 8:nae aut abortu pauciores, apicibus obtusis aut acutis, 

 loculis vulgo aeque longis, haud lenticularibus, ad septa saepe 

 leviter constrictae, membrana tenui aut modice incrassata, haud 

 gelatinosa, secundum annot. Nyl. in hb. suo „long. O.012— O.023, 

 crass. O.0045—O.009 mm". Conidia „basillaria, recta, long. 0. 004— 0. 005, 

 crass. O.0005 mm" (Nyl. in n. 800 in hb. suo). Gonidia typice 

 desunt. Fortuito algam pleurococcoideam, globosam, simplicem, 

 diam. O.oos— O.009 mm, hyphae affixam, in substrato vidi. 



3. M. cerasi (Schrad.) Vain. 



Verrucaria cerasi Schrad. Syst. Samml. Crypt. (1797) n. 174, Ust. 

 Neu. Ann. 16, 1797, p. 80 (22, p. 75, 87); Ach. Meth. Lich. (1803) p. 119. 

 V. epidermidis j9. V. cerasi Ach. Syn. Lich. (1814) p. 89; Nyl. Lich. 

 Scand. (1861) p. 281. Arthopyrenia cerasi Mass. Ric. Lich. Crost. (1852) 

 p. 167; Koerb. Syst. Lich. Germ. (1855) p. 369; Arn. Lich. Frank. Jur. 

 (Fl. 1875) p. 273, Lich. Fragm. XXII (Fl. 1880) p. 384 (15), Lich. Munch. 

 (1891) p. 119; Jatta Fl. It. Cryp. Ill p. 877. Lichen ellipticus Ach. Lich. 

 Suec. Prodr. (1798) p. 228. 



Thallus macula cinerascente indicatus, hypothallo in- 

 distincto. Apothecia vulgo sat crebra, verrucas formantia 

 vulgo basi circ. 0.360— O.400 mm longas, O.280— O.320 mm latas, 

 vulgo subellipticas, vertice convexas, nigras, nudas, nitidas 

 aut opacas. Perithecium subnigricans, dimidiatum, margine 

 ostiolori haud aut parum prominente, ostiolo variabili, saepe 

 0.o4o mm. lato foveolatoque. Paraphyses numerosae. Asci 



