Acta Societatis pro Fauna et Flora Fennica, 49, N.o 2. 147 



6. Didymosphaeria Fuck. 



Symb. Myc. (1869) p. 140; Sacc. Syll. Fung. I (1882) p. 701, 715; 

 Wint. Rabenh. Krypt.-Fl. Pilz. II (1887) p. 406, 416. Microthelia Koerb. 

 Syst. Lich. Germ. (1855) p. 373 (excl. spec, ad Tichothecium pert.); 

 Mass. Misc. Lich. (1856) p. 27; Th. Fr. Lich. Arct. (1860) p. 274, Gen. 

 Heterolich. (1861) p. Ill p. p.; Stizenb. Beitr. Flechtensyst. (1862) p. 

 147 p. p. 



Genus gonidiis destitutum, ad fungos pertinens. 

 Sporae 8:nae aut 4:nae, ovoideo-oblongae, obscuratae, 

 1-septatae. Paraphyses ramoso-connexae aut simplices. 

 Corticola. 



1. D. micula (Flot.) Vain. 



Verrucaria micula Flot. (1845) secund. Garov. Tent. II (1865) p. 17 

 Zwackh Lich. Exs. (1851) n. 110; Hue Addend. II (1888) p. 300, Lich 

 Exot. (1892) p. 313. Microthelia Koerb. Syst. Lich. Germ. (1855) p. 373 

 Th. Fr. Lich. Arct. (1860) p. 274; Arn. Lich. Frank. Jur. (Fl. 1885) p 

 268, Lich. Munch. (1891) p. 117; Jatta Fl. It. Crypt. Ill (1911) p. 898 

 A. Smith Mon. Brit. Lich. II (1911) p. 331, tab. 51 (excl. thallo). Vena 

 caria cinerella Flot. in Zwackh Lich. Exs. (1853) n. 217 (37 B); Nyl 

 Prodr. Lich. Gall. (1857) p. 436 (haud Addit. Fl. Chil., 1855, p. 174), 

 Exp. Pyrenoc. (1858) p. 60, Lich. Scand. (1861) p. 281, Lich. Paris (1896) 

 p. 127; Vain., Adj. Lich. Lapp. II (1883) p. 195. Verrucaria micula 

 f. furfuracea Garov. Tent. Lich. Longob. II (1865) p. 18 (66) sec. 

 exs. cit. 



Thallus macula cinerascente indicatus aut indistinctus. 

 Apothecia sat crebra aut sparsa, verrucas formantia sub- 

 hemisphaericas, circ. 0.2— 0.3 mm latas, nigras, nudas, opacas. 

 Perithecium fusconigrum, subdimidiatum, margine ostiolari 

 haud prominente, ostiolo circ. O.030 mm lato, saepe demum 

 foveolato. Paraphyses numerosae, tenues. Asci ventricoso- 

 oblongi, in apice membrana bene incrassata. Sporae distichae, 

 ovoideae, 1-septatae, bene constrictae, long. O.012— O.oie, crass. 

 O.005—O.008 mm („long. O.016— O.022, crass. O.007— O.009 mm" in 

 Zw. Lich. Exs. n. 110 A sec. annot. Nyl. in hb. suo). 



Distr. Ad corticem Alni, Salicis, Sorbi, Tiliae collecta. 

 Alandia (Edvin Nylander). Regio Aboensis: Runsala (A. 

 Kullhem). Tavastia austr.: Asikkala (J. P. Norrlin). Lapponia 

 Inarensis: In regione coniferarum mixtarum ad Ivalojoki 

 (Vain.), ad Inari (Edvin Nylander). 



