Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 151 



0.005 — 0.006 mm crassis (apicibus rotundatis), septo divisis crasso, 

 poro lato instructo, ex apice nascentibus sterigmatum sat brevi- 

 um, 0.003 mm crassorum, simplicium, in conceptaculis fusconigri- 

 cantibus, KHO nigricantibus, O.130 — O.ho mm latis. Indicationes 

 de distributione „Verrucariae betulinae" in Vain. Fl. Tav. Or. p. 

 121 et Adj. Lich. Lapp. II p. 196 ad hanc plantam pycnidiiferam 

 spectant. Specimina apotheciifera multo rariora sunt. Didymo- 

 sphaeria melanospora (Hepp, Flecht. Eur. n. 710, Microthelia 

 atomaria Koerb. Par. Lich. p. 397, haud Ach.), apotheciis et 

 pycnidiis immixtis ab Hepp in Helvetia lecta, septo tenui stylo- 

 sporarum a D. betulina differt. 



Obs. 1. Species sequentes ad Didymosphaeriam pertinentes in 

 Norvegia collectae sunt: 



D. fuliguncta (Norm.) Vain. (Norm. Nov. Gen. et Spec. Lich. 

 Norv. in Of v. K. Vet. Ak. Forh. 1884, p. 36). 



D. haplospora (Norm.) Vain. (Norm. 1. c. p. 37). 



D. atramentea (Norm.) Vain. (Norm. Nov. Lich. Spec, in Bot. Notis. 

 1867, p. 88). 



Obs. 2. Didymosphaeria pulposi Zopf (Unters. Par. Krankh. 

 Flecht. II in Nova Acta 70, Halle 1898, p. 286, Sacc. Syll. Fung. XVI 

 p. 502), apotheciis matrici (Collema pulposum) immersis, globosis, ascis 

 clavatis, sporis ovoideis, 1-septatis, decoloribus, paraphysibus et peri- 

 physibus evolutis, ad Sagediopsim (Sacc.) pertinere videtur. 



Subtrib. 10. Glaenoblastiae Vain. 



Thallus crustaceus, gonidia continens, aut e mycelio 

 gonidiis destituto constans. Apothecia recta, simplicia aut 

 confluentia, ostiolo mediano instructa. Paraphyses bene 

 evolutae. Sporae subfusiformes aut oblongae ellipsoideaeve, 

 decolores, murali-divisae. 



Subtrib. Glaenodictyae Vain, sporis obscuratis ab hac subtribu 

 differt [inch Bottaria Mass. et subg. Anthracothecium (Mass.) Vain.]. 



1. Thelenella Nyl. 



Ess. Nouv. Class. Lich. (Mem. Soc. Sc. Nat. Cherb. 1854) p. 15, 16, 

 Sec. Mem. (1. c. 1855) p. 193, Exp. Pyrenoc. (1858) p. 62; Vain. Etud. 

 Lich. Bres. II (1890) p. 215. Verrucaria st. Thelenella Nyl. in Hue 

 Addend. II (1888) p. 289 (em.). Microglaena Koerb. Syst. Lich. Germ. 

 (1855) p. 388 (em.). Bathelium Trev. Fl. 1861 p. 21 em. (haud Ach.); 

 Mull. Arg. Pyr. Cub. (1885) p. 376, 394 (em.). Polyblastia Mull. Arg. 

 Lich. Beitr. (Fl. 1882) n. 490 (nee Mass. Ric. Lich. Crost, 1852, p. 147, 

 nee Th. Fr. Polybl. Scand., 1877, p. 8). Clathroporina Mull. Arg. Lich. 



