154 E. A. Vainio, Lecideales. 



intus rubricoso-rufescens, KHO non reagens, chondroideum et in 

 margine extus subplectenparenchymaticum et cavitatibus ellipsoi- 

 deis, 0.0015 mm latis. Hypothecium superne subplectenparenchy- 

 maticum, cavitatibus rotundatis aut subellipsoideis, O.002 — O.0015 

 mm latis in seriebus verticalibus, membranis modice incrassatis, 

 raro dilute coloratum, inferne pallidum et irregulariter chondroi- 

 deum. Hymenium O.oto — O.090 mm crassum, jodo persistenter 

 caerulescens (in solutione dilutiore) aut demum violascens, ascis 

 apice persistenter caerulescentibus (in sol. concentr.). Paraphyses 

 arete cohaerentes, crass. O.ooi mm, apice baud aut parum in- 

 crassatae. Sporae vulgo bacillares, apicibus obtusis, rectae aut 

 subrectae, septis 7 — 3, long. O.025 — O.040, crass. O.0025 — O.003 mm. 

 Gonidia pleurococcoidea, globosa, diam. O.oos — O.020 mm, simplicia 

 aut parce glomerulosa, membrana saepe incrassata. 



Ser. B. Hymenium modice incrassatiim aut sat temie 

 (crass, circ. O.oeo— O.040 mm). 



4, B. affinis (Zwackh) Vain. 



Biatora affinis Zwackh Lich. Exs. (1859) n. 336 B [haud L. affinis 

 Schaer., quae ad L. sanguinariam (L.) pertinet]. L. atrosanguinea Sti- 

 zenb. Krit. Bern. Lee. Nadelf. Sp. (1863) p.p. (nee Hoffm., nee Schaer., 

 nee Anzi). Bacidia atrosanguinea a. corticola Th. Fr. Lich. Scand. II 

 (1874) p. 354 p. p. (excl. f. curtala). Bacidia atrosanguinea Arn. Lich. 

 Frank. Jur. (1884) p. 188. Lecidea subincompta Nyl. Fl. 1865 p. 147; 

 Norrl. et Nyl. Herb. Lich. Fenn. IV (1875) n. 187. Lecidea umbrina 

 *L. bacillifera F. 1) incompta Nyl. Lich. Scand. (1861) p. 210 (haud 

 Borr.). 



Thallus tenuis aut sat crassus, verruculosus aut verru- 

 cosus aut raro subisidiosus, cinereo-glaucescens aut pallidus 

 aut obscuratus, raro evanescens. Apothecia mediocria aut 

 sat parva, basi leviter constricta, adpressa, atra aut rarissime 

 rufescentia, disco piano aut vulgo demum convexo, margine 

 tenui, persistente aut vulgo demum excluso. Hypothecium 

 totum aut superne purpureum fuscescensve. Hymenium sat 

 tenue, superne aeruginosum aut rarissime pallidum decolo- 

 ratumve, KHO non reagens. Sporae bacillares aut rarius 

 partim subaciculares, sat longae mediocresve aut raro bre- 

 viores, septis vulgo numerosis, rarius paucis. 



Distr. Praesertim basim versus ad truncos arborum, 

 velut Populi, Salicis capreae, Juniperi, rarius Sorbi, Betulae, 



