Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 201 



Var. obscurior Vain. Bacidia Beckhousii a. obscurior Th. Fr. 

 Lich. Scand. II (1874) p. 360 (emend.). Bacidia minascula Anzi 1. c. 

 SeCQliga Beckhausii f. minascula Stizenb. 1. c. p. 22. 



Exs. Anzi Lich. Langob. Exs. IV (1861) n. 147. — Arn. Lich. 

 Exs; (1871) n. 462. — Th. Fr. Lich. Scand. Exs. Ill (1865) n. 67. — 

 Norrl. et Nyl. Herb. Lich. Fenn. VII (1882) n. 318. — Arn. Lich. Mo- 

 nac. (1895) n. 410. — Malme Lich. Suec. Exs. IV (1908) n. 9L 



' Apothecia nigra aut livido-nigricantia, nuda, vulgo convexa, 

 margine tenuissimo, vulgo niox excluso. Hymenium superius lividum 

 vel sordide subviolaceum subfuscescensve. 



Ad corticem Sorbi, Salicis capreae, Alni, rarius Populi, Coryli, 

 Pruni padi, Juniperi, S. pentandrae, Quercus et ad lignum truncorum 

 vetustorum crescit, passim in provinciis meridionalibus mediisque 

 Fenniae, in Karelia Onegensi (Norrl.) et adhuc in Ostrobotnia Kaja- 

 nensi (Vain.) proveniens. In regione abietina montis Narankavaara 

 et in regione Coniferarum mixtarum ad Mantyjoki in Kuus. (Vain.). 

 KKer.: Inter Suvijarvi et Knjasa (N. I. Fellman). Ob.: Ad Alkkula 

 et Turtola (Norrl.). LEnont.: Ad Hetta in Enontekiainen (Noirl.). 



, Hypothallus indistinctus. Apothecia lat. O.ia — O.s mm, crass, circ. 

 0.200 mm, sat crebra aut sparsa, interdum demum tuberculato-divisa, 

 baud pruinosa, disco mox convexo, nigro aut livido-nigricante aut 

 rarius livido, margine tenuissimo, nigricante aut livido aut subalbido, 

 mox aut demum excluso. Hypothecium superne subplectenparenchy- 

 maticum, cellulis partim praesertimque ad marginem in seriebus sub- 

 horizontalibus aut irregulariter dispositis, cavitatibus rotundatis aut 

 depressis, O.oois — O.oos mm latis, membranis leviter incrassatis, pallidum 

 sublutescensve aut decoloratum, KHO interdum partim dilutissime 

 violascens, inferne sat anguste chondroideum, decoloratum, hyphis 

 ramosis pachydermaticis, conglutinatis, irregulariter contextis, in parte 

 superiore sensim in stratum subplectenparenchymaticum transiens. 

 Perithecium chondroideum, hyphis radiantibus, modice pachydermaticis, 

 conglutinatis, tubulis O.oois— O.002 mm crassis, in margine vulgo sub- 

 violascenti-rufescens, KHO violascens, inferne vulgo decoloratum. 

 Hymenium circ. O.040 — O.oso mm crassum, jodo caerulescens deindeque 

 vinose rubens. Hymenium superius vulgo lividum vel sat dilute sor- 

 dide subviolascens aut raro subfuscescens, KHO pulchre violascens. 

 Paraphyses sat arete cohaerentes, simplices, apice hand aut parum 

 incrassatae, tubulis O.ooi mm crassis, membranis gelatinosis. Sporae 

 bacillares, apicibus obtusis, rectae aut leviter curvatae, long. O.oi? — 0.022 

 ( — 0.026), crass. O.0015— O.002 ( — O.003) mm, 3-septatae aut raro — 7-septatae. 

 Stylosporae ellipsoideo-oblongae, lateribus cylindricis, apicibus rotun- 

 datis, rectae, decolores, simplices, long. O.003, crass. O.ooi mm, nu- 

 merosissimae, in conceptaculis prominentibus, atris, hemisphaericis 

 aut basi leviter constrictis, diam. O.090 — O.120 mm, sub microscopio cya- 



