174 E. A. Vainio, Lecideales. 



13. B. subacerina Vain. 



Lecidea endoleuca f. subacerina Nyl. in litt. (ined.). L. acerina 

 Nyl. Fl. 1872 p. 315 (Hue Addend. Lich. Eur., 1886, p. 164) p. p. (sec. 

 herb, suo); Zwackh Lich. Exs. (1879) n. 532; Norrl. et Nyl. Herb. Lich. 

 Fenn. (1882) n. 315; Th. Fr. Lich. Scand. (1874) p. 347 p. p. (excl. 

 Lichene acerino Pers.). Bacidia acerina Malme Lich. Suec. Exs. (1897) 

 n. 29, 30. L. endoleuca Vain. Fl. Tav. Or. (1878) p. 114. 



Exs. Norrl. et Nyl. 1. c. — Malme 1. c. 



Thallus crustaceus, tenuis, verrucis verruculisve disper- 

 sis, vulgo depressis, parce instructus, albidus aut albido- 

 glaucescens. Apothecia majuscula aut mediocria, subfusca 

 aut nigricantia aut raro rufescentia, elevata aut adpressa, 

 sessilia, disco piano aut demum convexo, margine sat tenui, 

 persistente aut demum excluso. Hypothecium decoloratum 

 aut partim pallidum aut maculis subrubricosis, KHO non 

 reagens. Hymenium crassum. Epithecium purpureo-rubrico- 

 sum aut rubricoso-rufescens, KHO subviolaceo-rubricosum 

 aut demum decoloratum. Perithecium extus rufescens aut 

 partim sat dilute rubricosum, KHO purpureo-rubricosum, 

 intus decoloratum aut dilute rufescens. Sporae aciculares, 

 longae, long. O.oss — 0.o5o, crass. O.003 — O.002 mm. 



Distr. Ad corticem Abietis, raro Sorbi (n. 2, 3). N.: 

 Prope Helsingforsiam (Vain.), Vihti (W. Nyl.). IKar. : Vam- 

 melsuu in Uusikirkko (A. 0. Kairamo). Ta.: Pahkijarvi (2) 

 in Tammela (A. KuUhem), Tiirismaa in Hollola (J. P. Norrlin, 

 Vain.), Soima (3) in Korpilahti (Vain.). KOI.: Mandroga 

 (F. Elfving). 



Apothecia sparsa aut sat crebra, basi bene constricta lat. 

 1 — 0.5 mm, crass. O.260 — O.310 mm, baud pruinosa, margine disco 

 concolore, discum baud superante, baud aut leviter nitido. Peri- 

 thecium chondroideum, ex hyphis formatum radiantibus, modice 

 pachydermaticis, cavitatibus oblongis aut elongatis, O.0005 — O.oois 

 mm latis. Hypothecium superne decoloratum aut pallidum aut 

 maculis pallido-rubricosis, praesertim ad marginem, subchondroi- 

 deum, cavitatibus brevibus, vulgo depressis, O.0015 — O.002 mm 

 latis, in seriebus irregulariter subhorizontalibus, membranis modice 

 pachydermaticis, inferne decoloratum, irregulariter chondroideum, 

 tubulis tenuibus, membranis incrassatis. Hymenium O.oso — O.oeo 

 mm crassum, jodo persistenter caerulescens aut (in n. 2) demum 



