Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 165 



mm crassum, jodo caerulescens deindeque vinose rubens. Hymenium 

 superius aeruginoso-nigricans. Sporae aciculares, long. O.028— O.034 

 („ — 0.048" sec. Nyl.), crass. O.002— O.003 mm, pluri-septatae, septis saepe 6. 



6. B. peltigericola Vain. 



Lecidea arceutina Nyl. Fl. 1874 p. 14. „L. arceutina peltigericola" 

 Norrl. Fl. Kar. Oneg. 11 (1876) p. 31 (determ. Nyl.). 



Thallus e verruculis constans sparsis, circ. O.15— O.i mm 

 latis, albido-glaucescentibus. Apothecia parva, sessilia, basi 

 constricta, fuscoatra aut nigricantia, baud pruinosa, disco 

 depresso-convexo, margine concolore, tenuissimo, subper- 

 sistente. Hymenium sat tenue. Epithecium aeruginosum 

 aut subcaerulescens, KHO non reagens. Hypothecium 

 plectenparenchymaticum, rubricoso-rufescens. Perithecium 

 subfuscescens. Paraphyses simplices. Sporae vermiculari- 

 aciculares, contortae, sat breves, tenuissimae. 



Distr. Supra partes emorientes Peltigerae caninae in 

 Hollola Tavastiae et Valkeamaki in Karelia Onegensi (J. P. 

 Norrlin). 



A B. arceutina (Ach.) praesertim epithecio caerulescente et 

 hymenio tenuiore et sporis brevioribus differt et magis est simi- 

 lis Bacidiae muscorum et B. umbrinae Ach. — Thallus verruculis 

 parcis aut evanescens. Apothecia lat. 0.38 — O.2 mm, opaca, sat 

 crebra. Hymenium O.040 — O.oeo mm crassum. Epithecium caeruleo- 

 aeruginosum, partim intense, partim dilute, partim parce etiam 

 subviolaceo-olivaceum, KHO dilutius coloratum. Hypothecium 

 cavitatibus cellularum O.002 mm latis, rotundatis aut difformibus, 

 irregulariter dispositis, membranis leviter incrassatis, KHO sor- 

 dide subviolaceo-fuscescens. Perithecium cavitatibus oblongis 

 aut difformibus, O.002 mm crassis, nigricanti- aut subviolascenti- 

 fuscescens, KHO sordide subviolaceo-fuscescens. Paraphyses 

 arete cohaerentes, variabiles, tenuiores crassioresve, saepe su- 

 perne sensim incrassatae, baud raro apice clavatae. Asci clavati. 

 Sporae 8mae, leviter aut bene contortae, aciculares, at spiraliter 

 flexuosae, long. O.028 — O.040, crass. O.ooi mm. Gonidia pleuro- 

 coccoidea, cellulis globosis, diam. O.oos — O.015 mm, vulgo simpli- 

 cia, etiam glomerulosa. Nylander sec. annot. in herb, suo in 

 specimine ex Hollola (n. 17929) conidangia observavit conidiis 

 instructa „filiformibus, arcuatis". 



