218 E. A. Vainio, Pyrenocarpeae. 



tenui, long. circ. O.090 — O.100, crass. O.010 — O.012 mm. Sporae 

 rectae aut leviter arcuatae, apices versus sensim attenuatae. 

 Conidangia adnata, hemisphaerica, lat. O.060 mm, ostiolo nullo. 

 Conidia bacilliformia, recta aut raro leviter curvata, long. O.002, 

 crass. O.0005 mm. 



Obs. Microthyrium maculans Zopf (Nova Acta 70, Halle 1898, p. 

 255), ad Umbilicariam hirsutam in Germania collectum, periphysibus 

 et paraphysibus destitutum, sporis subovoideo-oblongis, 1-septatis, 

 decoloribus instructum, ad fungos pertinet. 



2. Micropeltopsis Vain. 



Parasitae lichenum, ad fungos pertinentes. Sporae 

 8:nae, decolores, 3- aut pluri-septatae. Paraphyses haud 

 evolutae. Perithecium tenue, fuscescens, dimidiatum, ex 

 hyphis radiantibus formatum. — Sphaerulina II. Pharcidiella 

 Sacc, Syll. Fung. XVII (1905) p. 695, et Metasphaeria subg. 

 Sagediopsis Sacc. et Trott., 1. c. XXII (1913) p. 201, peri- 

 theciis ab hoc genere differunt. 



1. M. cetrariicola (Nyl.) Vain. 



„Verrucaria aut potius Sphaeria cetrariicola" Nyl. in Norrl. Ber. 

 Torn. Lappm. (1873) p. 323. Sphaeria cetrariicola Nyl. in Grevillea III 

 (1874) p. 68. Metasphaeria Sacc. Syll. Fung. II (1883) p. 184; Zopf 

 Uebers. Schmaroz. Pilze (Hedwigia 1896) p. 323. Sphaerulina Karst. 

 Rev. Asc. (1885) p. 171; Sacc. 1. c. IX (1891) p. 849; Vouaux Syn. Paras. 

 Lich. (1913) p. 33, 34. 



Thallus inconspicuus. Apothecia crebra, verrucas for- 

 mantia hemisphaericas, O.oso— O.no mm latas, nigras, nudas, 

 opacas. Perithecium rufescenti-rubricosofuligineum, dimi- 

 diatum, margine ostiolari haud prominente, ostiolo O.010 mm 

 lato, irregulari. Paraphyses vulgo haud evolutae. Asci 

 ventricosi, membrana modice incrassata. Sporae distichae, 

 „oblongae aut fusiformi-oblongae, apicibus obtusis, 1—3- 

 septatis, long. O.015 — O.oie, crass. O.0035 mm" (sec. annot. Nyl. 

 in sched.). 



Distr. Parasita in Cetraria hiascente (Fr.) var. fastigiata 

 (Del.) in Ounastunturi in Lapponia Kemensi (J. P. Norrlin). 



Perithecium ex hyphis formatum radiantibus, conglutinatis, 

 crebre septatis, O.004 — O.003 mm crassis, KHO sordide violaceo- 



