152 E. A. Vainio, Pyrenocarpeae. 



Beitr. (Fl. 1882) n. 541 (em.), Pyr. Cub. (1885) p. 376, 403 (em.). Phyllo- 

 bathelium Mull. Arg. Lich. Beitr. (Fl. 1890) n. 1547 em. (Fl. 1883 n. 

 680 em.). 



Thallus crustaceus, uniformis. Apothecia simplicia aut 

 confluentia, gonidiis hymenialibus nullis. Perithecium rectum, 

 ostiolo mediano. Gelatina hymenialis jodo caerulescens aut 

 non reagens. Paraphyses bene evolutae, simplices aut 

 ramoso-connexae. Sporae 8:nae aut pauciores, decolores, 

 breves (oblongae aut ellipsoideae aut subfusiformes), murales. 

 Gonidia pleurococcoidea aut a Trentepohlia aut Phycopeltide 



aut Gloeocapsa praedita. 



Species Fennicae ad sect. Microglaenam (Koerb.) Vain, pertinent, 

 apotheciis simplicibus, paraphysibus bene aut parce ramoso-connexis, 

 gonidiis pleurococcoideis aut gloeocapsoideis instructam. 



Stirps 1. Eumicroglaena (Jatta) Vain. 

 Microglaena * Eumicroglaena Jatta Fl. It. Crypt. Lich. p. 845. 

 Perithecium amphithecio thallino obductum aut thallo 

 immersum. 



1. Th. leucothelia (Nyl.) Vain. 



Vermcaria leucothelia Nyl. Fl. 1864 p. 356, Lich. Lapp. Or. (1866) 

 p. 170; Norrl. Beratt. Torn. Lapp. (1873) p. 343, 346; Stizenb. Lich. 

 Helv. (1882) p. 248; Vain. Adj. Lich. Lapp. II (1883) p. 182. Dactylo- 

 blastus leucothelius Anzi Analect. Lich. It. Sup. (1868) p. 23. Micro- 

 glaena leucothelia Arn. Lich. Tirol XIV (1875) p. 460; Jatta Fl. It. 

 Crypt. Lich. p. 845. Thelopsis Zahlbr. Ascolich. (1903) p. 67. 



Exs. Fellm. Lich. Arct. (1864) n. 219. — Anzi Lich. Kar. Langob. 

 Exs. XIII (1868) n. 522. — Arn. Lich. Exs. (1874) n. 613, (1877) n. 

 613 b. 



Thallus modice incrassatus, verruculosus aut verru- 

 culoso-inaequalis, dispersus, albidus aut evanescens vel 

 particulis gelatinosis cinerascentibus pallescentibusve sub- 

 strati putrescentis immixtus, hypothallo indistincto. Apo- 

 thecia partim sat crebra, verrucas formantia 0.4 — O.25 ( — O.e) 

 mm latas, subglobosas, basi leviter constrictas aut prae- 

 ruptas, sat laevigatas, albidas, vertice leviter applanato aut 

 rarius leviter impresso, margine ostiolari nigro distincte 

 limitato, opaco, haud aut raro demum leviter prominente, 

 ostiolo 0.030—0.040 mm lato. Perithecium albidum, vertice 



