Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 223 



Meth. Lich. (1803) p. 119 (specim. e Suecia, ad cort. Ulmi), Lich. Univ. 

 (1810) p. 275, Syn. Lich. (1814) p. 87. Mycoporum ptelaeodes Nyl. Lich. 

 Scand. (1861) p. 291, Lich. Pyr. Or. (1891) p. 90; Norrl. Bidr. Sydostr. 

 Tav. Fl. (1870) p. 194, Fl. Kar. Oneg. II (1876) p. 40; Vain. Fl. Tav. 

 Or. (1878) p. 121, Adj. Lich. Lapp. II (1883) p. 200; Brenner Hogl. Lafv. 

 (1885) p. 129; A. Sm. Mon. Brit. Lich. II (1911) p. 349. Cyrtidula betulina 

 Minks in Arn. Lich. Exs. (1877) n. 733 (secundum Minks Lich. Cyrtid. 

 p. 6 et 7). 



Exs. Arn. Lich. Exs. (1877) n. 733. - - Zwackh Lich. Exs. (1889) 

 n. 1095. — Arn. Lich. Exs. (1893) n. 1573, 1595. 



Apothecia crebra aut parce etiam confluentia aggrega- 

 tave, vulgo simplicia, verrucas formantia hemisphaericas, 

 circ. O.no—0.140 mm latas, fusco-nigricantes. Perithecium 

 fuscescens, dimidiatum, vulgo nudum, hyphis fuscis e basi 

 excrescentibus parcis. Sporae decolores, submurales, septis 

 transversis 4 — 3 aut raro 5, in loculo apicis crassioris 

 secundo aut rarius primo ambobusve septo uno longitudinali, 

 long. O.012 — 0.oi8, crass. O.006 — O.oos mm. 



Distr. Praesertim ad corticem Betularum juniorum, 

 rara ad corticem Sorbi et Alni. Locis numerosis collecta. 

 Nylandia: Makienpaallys et Purjeniemenpaallys Hoglandiae 

 (M. Brenner), Mjolo (J. P. Norrlin, F. Elfving, Vain.), Kyrk- 

 slatt (A. Kullhem). Karelia austr.: Kakki (C. E. Boldt). Ta- 

 vastia austr.: Tiirismaa, Upila (Vain.), Messila, Hersala (Norrl.) 

 in Hollola, Kaila in Asikkala (Norrl.), Onkisalo in Luhanka 

 (Vain.). Karelia Onegensis: Pogost in Suojarvi, Tiudie (Norrl.). 

 Savonia bor.: Levamaki in Kuopio (K. Linkola). Ostrobotnia 

 bor.: Tornio (Th. Saelan) et ibi in sepulcreto (J. Carroll, 

 4259 in hb. Nyl.), Alkkula, Ylitornio, Turtola (Norrl.). Kuu- 

 samo: prope Mantyjoki (Vain.). Lapponia EnontekLensis: 

 Kaaresuanto (Norrl.). 



Apothecia rarius epidermide substrati velata, vulgo nuda, 

 opaca aut raro nitida. Perithecium tenue, plectenparenchymaticum, 

 cellulis subglobosis, O.004 — O.006 mm latis, peridium, ut ait Nyl., 

 et cyrtidium in sensu Minksiano (1. c.) formans, fissura flexuosa 

 aut 3-radiata aperiens. Nucleus nee gelatinosus, nee resinoso- 

 guttulosus, jodo non reagens. Asci subglobosi, long, et lat. O.030 

 mm, pressione saepe difformes, quare saepe etiam long, usque 

 ad O.045 et crass. O.020 mm, membrana sat tenui, mollissima, jodo 

 non reagente, metaplasmate rubescente. Paraphyses haud evolutae 



