162 E. A. Vainio, Lecideales. 



orig. in Scotia a Stirton lectum leviter differt. — L. austerula Nyl. (Fl. 

 1873 p. 20) difficillime a v. incrustata distinguitur. Thallo morboso, 

 areolato, obscure cinerascente aut partim evanescente, at parce etiam 

 squamoso, instructa, revera in Toniniam aromaticam (Turn.) transit. 



5. B. muscorum (Sw.) Arn. 



Fl. 1871 p. 52, Lich. Frank. Jur. (Fl. 1884) p. 187. Lichen musco- 

 rum Sw. Meth. Muse. (1781) p. 36 (Th. Fr. 1. c. p. 354, 356). Lecidea 

 Ach. Meth. Lich. (1803) p. 33; Nyl. Lich. Par. (1896) \). 84. L. umbrina 

 *L. bacillifera f. 2) muscorum Nyl. Lich. Scand. (1861) p. 210. L. bacilli- 

 fera var. muscorum Nyl. Lich. Lapp. Or. (1866) p. 155. L. atrosanguinea 

 var. muscorum Vain. Adj. Lich. Lapp. II (1883) p. 20, Lich. Pitlek. (1909) 

 p. 103. L. pezizoidea Hepp Wiirzb. Lich.-Fl. (1824) p. 60, Syst. Samml. 

 (1852) n. 207, Flecht. Eur. (1853) n. 25 (conf. Nyl. Sur Lich. Hepp Obs. 

 Crit, 1854, p. 3). Secoliga pezizoidea Stizenb. Krit. Bern. Lee. Nadelf. 

 Sp. (1863) p. 13. Rhaphiospora viridescens Mass. Ale. Gen. (1853) p. 12, 

 Koerb. Parerg. Lich. 3 Lief. (1861) p. 239. 



Thallus sat crassus aut tenuis, verruculosus, cinereo- 

 aut olivaceo- aut albido-glaucescens aut albidus. Apothecia 

 majuscula aut mediocria aut sat parva, basi bene constricta, 

 disco atro, opaco, piano aut demum convexo, margine tenui 

 aut mediocri, atro, opaco, aut rarius pruinoso, persistente 

 aut demum excluso. Hypothecium totum aut superne 

 rubricoso-rufescens aut subviolascens aut partim sub- 

 fuscescens. Hymenium sat tenue. Hymenium superius 

 cyanescenti-nigricans aut subaeruginosum aut raro oliva- 

 ceum aut partim subdecoloratum, KHO non reagens. 

 Perithecium in margine rubricoso-rufescens aut raro aeru- 

 ginosum, KHO non reagens. Sporae aciculares, alterum 

 apicem versus attenuatae, longae aut mediocres, septis 

 numerosis. Muscicola aut terricola. 



Distr. Supra muscos destructos terricolas et saxicolas 

 et ad ipsam terram arenosam argillaceamve praesertimque 

 locis calcariis passim toto territorio. Variationes hujus 

 speciei inconstantes sunt, saepe in eodem specimine 

 transeuntes. 



Var. chromatophila Vain. 



Hypothecium totum subviolaceum. Perithecium in margine vio- 



