140 E. A. Vainio, Pyrenocarpeae. 



puncto minutissimo indicate Perithecium fuscofuligineum, 

 dimidiatum, extrorsum anguste attenuato-productum et ma- 

 culam vulgo ellipsoideam, nigricantem in substrato formans. 

 Paraphyses numerosae. Asci subcylindrici, membrana sat 

 tenui. Sporae 8:nae, distichae aut rarius monostichae, fusi- 

 formes, apicibus obtusis aut sat obtusis, olivaceo-nigricantes, 

 3-septatae, loculis apicalibus paullo minoribus, long, vulgo 

 O.oh — O.016, crass. O.006 mm. 



Distr. Ad corticem Coryli et raro Sorbi crescit. Regio 

 Aboensis: Aboa (F. Elfving). Nylandia: Smedsby in Kyrk- 

 slatt (G. Lang). Tavastia austr.: Isosaari et Enonsaari (Vain.), 

 Uskila et Lehmoniemi (Norrl. 1. c.) in Hollola, Asikkala (Norrl.). 

 Kuusamo: Porontimajarvi (F. Silen). 



Mycelium hyphis decoloratis, O.0015 mm crassis. Ostiolum 

 circ. O.030 mm lat. Nucleus albidus, haud guttulosus, jodo non 

 reagens. Asci primum cylindrici, demum interdum ventricoso- 

 cylindrici, long. O.055 — O.070, crass. O.oos — O.ou mm. Paraphyses 

 simplices. Sporae strato tenui gelatinoso indutae, „long. O.011 — 

 O.015, crass. O.005 — O.006 mm" secund. Nyl. 1. c. Conidangia haud 

 rara (inter apothecia), fuscescentia, hemisphaerica, dimidiata, lat. 

 0.140 — O.160 mm. Sterigmata simplicia, apicem versus sensim 

 attenuata, long. O.oos, crass. O.001 mm, haud septata. Conidia 

 filiformia, arcuata, long. O.020, crass. O.0005 mm. Hyphae fusci e 

 basi perithecii excrescentes crass. O.0015 — O.002 mm, haud con- 

 strictae. Gonidia desunt, sed interdum Trentepohliam umbrinam 

 apud apothecium supra corticem repentem observavi. 



2. Xenosphaeria (Trevis.) Sacc. 



Xenosphaeria Trevis. Consp. Verruc. (1860) p. 18 p. p.; Koerb. 

 Par. Lich. 5 Lief. (1865) p. 466 p. p.; Zopf Unters. Par. Krankh. Flecht. 

 (Nova Acta, Halle 1897) p. 151, tab. I f. 8—17; Jatta Fl. It. Crypt. Ill 

 (1911) p. 842 p. p.; Sacc. Syll. Fung. XXII (1913) p. 235. Leptosphaeria 

 Sacc. 1. c. II (1883) p. 13 p. p., Zopf 1. c. p. 160. 



Parasitae lichenum, ad fungos pertinentes. Sporae 

 8:nae aut 4:nae, breves, fuscescentes aut nigricantes, septis 

 transversis 3 aut pluribus, loculis haud lenticularibus. Para- 

 physes distinctae. Nucleus jodo haud reagens. Perithecium 

 globosum, fuligineum aut intense coloratum, integrum (aut 

 basi deficiens sec. Zopf 1. c. p. 161, fig. 49). 



