334 E. A. Vainio, Lecideales. 



Distr. Pluribus locis collecta. 



Thallus paullo crassior, quam in f. colludente. Epithecium sor- 

 dide aeruginosum. — Huic formae proximus est Zwackh Lich. Exs. 

 (1853) n. 202 (in f. incrassatam transiens). 



F. infernula (Nyl.) Vain. Lecidea infernula Nyl. Lich. Nov. Fret. 

 Behr. (Fl. 1885) p. 440, Enum. Lich. Fret. Behr. (Bull. Soc. Linn. Norm. 

 4. ser. I, 1888) p. 58. 



Thallus tenuis aut tenuissimus, laevigatus, dispersus, areolis 

 parvis, cinerascentibus. Apothecia minora, margine tenui. 



Distr. Ad lapides et rupes (diabasica). Kuus.: Ad Kitkajoki 

 (F. Silen). LEnont. : Ad Kilpisjarvi („L. colladens minor" sec. Nyl. in 

 Norrl. Ber. Torn. Lappm. p. 340). 



Est intermedia inter f. caesiocinerascentem et f. dispersellam. 

 Areolae thalli lat. vulgo 0.3 — O.2 mm, vulgo planae. Hypothallus nigri- 

 cans. Apothecia lat. O.c — O.3 mm. Perithecium fuligineum. Hypothecium 

 rubricoso-fuligineum. Hymenium circ. O.no mm crassum, sat parce 

 gelatinosum, parte superiore saepe partim leviter aeruginosum, epi- 

 thecio subolivaceo-fuligineo. Paraphyses increbre septatae, vix O.oois 

 mm crassae, apice O.003— O.004 mm crassae. Sporae decoloratae aut demum 

 dilute fuscescenti-pallidae, 1-septatae, long. Oois — O.027, crass. O.oio — O.oh 

 mm, strato gelatinoso tenui indutae. In specim. Sibiricis sec. Nyl. 

 sporae long. O.oh— O.me, crass. O.ooe — O.oos mm, demum obscuratae, gel. 

 hym. jodo caerulescens, dein sublutescens. L. decinerascens Nyl., Fl. 

 1885 p. 445, Enum. Lich. Fret. Behr. (1888) p. 14, sec. specimina orig. 

 a L. infernula Nyl. nulla nota differens, sporis incoloribus, long. O.012 — 

 0.023, crass. O.007 — O.on mm, gel. hym. jodo bene caerulescente, dein vinose 

 fulvescente, a Nyl. descripta est. 



F. dispersella Vain. L. Hochstetteri var. dispersella Vain. Adj. 

 Lich. Lapp. II (1883) p. 132. 



Thallus obsoletus, vix ullus visibilis aut e verruculis minutissi- 

 mis, dispersis constans, hypothallo obsoleto. Apothecia minora, mar- 

 gine tenui. 



Distr. Ad lapides in reg. subalpina montis livaara in Kuus. 

 (Vain.). 



Medulla KHO aut jodo non reagens. Epithecium aeruginoso- aut 

 olivaceo-fuligineum. Paraphyses apice incrassatae. Sporae 1-septatae, 

 decoloratae, long. circ. O.oio, crass. O.oio mm. 



F. incrassata Vain. L. Hochstetteri f. incrassata Vain. Adj. Lich. 

 Lapp. II (1883) p. 131. Rhizocarpon Massalongii Malme Lich. Suec. Exs. 

 V (1909) n. 124, XI (1912) n. 274. 



