Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 199 



Obs. Var. coerulea (Koerb.) Vain. (Bacidia coerulea Koerb. 1. c.) 

 secund. Hepp 1. c. n. 746 a disco livido-nigricante aut subcaerulescenti- 

 livido et margine (in lamina tenui) pallido aut saepe partim sordide 

 aeruginoso a var. Norrlini differt et non sit autonoma species. Apo- 

 thecia lat. O.s — O.s mm, numquam pruinosa, vulgo mox depresso-convexa 

 margineque excluso, late adnata, basi parum constricta, interdum uno 

 latere carneo-pallescente (et apotheciis B. hemipoliae Nyl. subsimilia). 

 Hymenium O.ois — O.oso mm crassum. Epithecium saltem partim sordide 

 aeruginosum, KHO non reagens aut dilutescens (in Rabenh. 1. c. 

 n. 524 a KHO dilute sordideque subviolascens). Hypothecium pallidum 

 aut decoloratum. Perithecium plectenparenchymaticum, cavitatibus 

 rotundatis aut ellipsoideis, O.oos— O.oois mm latis, membranis modice in- 

 crassatis. Paraphyses simplices, crass. O.ooi mm, apice subaeruginoso- 

 capitato et O.oos— O.002 mm crasso (apice baud incrassato aut O.002 mm 

 crasso in Rabenh. 1. c). Sporae aciculares, rectae aut leviter contortae, 

 4 — 7-septatae, long. O.022 — O.oss, crass. O.0015— O.002 mm (in Rabenh. 1. c). 

 „long. 0.028—0.044, crass. O.002 — O.oos mm, 3-septatae" observante Nyl. in 

 specim. ad Heidelbergam lecto. — Hue pertinent Hepp Lich. Helv. IV 

 (1867) n. 746 a, Rabenh. Lich. Eur. XIX (1861) n. 524 a, b, Lojka Lich. 

 Univ. (1885) n. 36, Malme Lich. Suec. Exs. II (1897) n. 33, XIX (1915) 

 n. 463 et teste Arn. 1. c. Zwackh Lich. Exs. (1851) n. 88 a, bis, Koerb. 

 Lich. Sel. Germ. VI (1857) n. 162, Oliv. Herb. Lich. de I'Orne n. 88. — 

 In Fennia nondum est lecta. 



23. *B. HoUolensis Vain. (n. subsp.). 



Thallus vulgo modice incrassatus, verruculosus, sordide 

 albidus. Apothecia parva, nigricantia aut partim fusconigra 

 fuscave, nuda, late adnata, basi parum constricta, disco piano 

 aut vulgo demum convexo, margine tenuissimo, vulgo demum 

 excluso. Hypothecium croceo- vel fulvo-rubescens. Hyme- 

 nium sat tenue, praesertim parte superiore dilute sordide- 

 que subaeruginosum, KHO non reagens. Perithecium in mar- 

 gine subrufescens, KHO purpureum. Paraphyses simplices. 

 Sporae subaciculares, pauci-septatae, rectae aut leviter con- 

 tortae. 



Distr. Ad truncum putridum alni in Hersala in par. 

 Hollola Ta. (Vain.). 



Thallus partim sat crassus, partim evanescens, verruculis 

 contiguis aut subdispersis, aut partim verruculoso-inaequalis, 

 hypothallo indistincto. Apothecia crebra, lat. O.5 — O.2 mm, opaca. 

 Hymenium O.040 — O.oso mm crassum, \iodo caerulescens deindeque 



