80 E. A. Vainio, Pyrenocarpeae. 



medio adnatis, lobatis, saepe demum caespites plus minus 



latos formantibus, superne lurido- vel pallido-glaucescenti- 



bus aut luridis, opacis, subtus nigricantibus aut ambitum 



versus rarius late albidis, rhizinis paucis basalibus substrato 



affixus, hypothallo destitutus. Gonidia hymenialia globosa. 



Perithecium integre fuligineum. Sporae binae, demum sub- 



obscuratae. 



Distr. Ad terrain et plantas destructas in rupibus 



insulae Valamo (collegit W. Nyl., ,,Verr. pallida" in Nyl. 



Lich. Scand. p. 268) et ad Selkapajanlahti Hoglandiae (leg. 



M. Brenner, „Verr. pallida" sec. Nyl. in Brenn. Bidr. Hogl. 



Lafv. p. 125). 



Habitu subsimilis E. adscendenti (Anzi), sed rhizinis ab ea 

 recedens. E. pallidum Ach. thallo magis adnato adpressoque, 

 superne pallido rufescenteque et subtus pallido, rhizinis destituto 

 ab his distinguitur. — Thallus in E. adsurgente difformis, long, 

 et lat. circ. 7 — 2 mm, crass. 0.16 — 0.2 mm, lobis circ. 1 — 2 mm 

 latis, planiusculis aut concavis aut subcomplicatis, laevigatis, haud 

 pruinosis, rhizinis obscuratis. Apothecia thallo immersa, margine 

 ostiolari nigricante interdum demum leviter prominente, ostiolo 

 saepe foveolam parvam formante. Perithecium subglobosum, lat. 

 circ. 0.38 mm, fuscofuligineum, integrum. Nucleus jodo dilute 

 vinose rubens. Periphyses numerosae, constipatae. long. circ. 

 0.035 — 0.050 mm, crass. O.003 — O.0015 mm, extus gelatinosae. Para- 

 physes in gelatinam diffluxae, striis indicatae. Gonidia hymenialia 

 globosa, simplicia diam. O.002 — O.003 (raro — O.004) mm, partim 

 2-cellulosa et in seriebus elongatis disposita, membrana tenui. 

 Sporae diu decolores, demum testaceo-rufescentes, oblongae elli- 

 psoideaeve aut ovoideo-oblongae, apicibus rotundatis, murali- 

 divisae, cellulis numerosissimis, long. O.034 — O.052, crass, circ. 

 O.020 mm, membrana haud gelatinosa. Asci membrana gelatinosa, 

 sat crassa. Stratum corticale superius thalli crass. O.025 — 0. 010 mm, 

 plectenparenchymaticum, leptodermaticum, cavitatibus cellularum 

 O.008 — O.ooc mm, rotundatis, seriebus cellularum verticalibus sicut 

 etiam in strato medullari. Stratum medullare parte gonidiis de- 

 stituta crassa, in parte interiore hyphis cylindricis, haud conglu- 

 tinatis, in parte inferiore irregulariter plectenparenchymaticum 

 nigricansque, stratum corticale vix distinctum formans. Goni- 

 dia pleurococcoidea, globosa, simplicia diam. O.oos — O.010 mm, 

 saepe etiam 2-cellulosa, membrana leviter aut modice incras- 

 sata. 



