Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 13 



aut oblongo-fusiformes, apicibus sat acutis aut subobtusis, rectae, 

 simplices (sec. Th. Fr., Nyl. 1. c, t. VI f. 19 variant obsolete dy- 

 blastae), long, vulgo O.oie — O.022, crass. O.0025 mm (sec. Nyl. 1. c. 

 long. 0.011 — 0.026, crass. O.0025 — O.003 mm). Hypothecium decolo- 

 ratum, in parte superiore hyphis erectis, nee ab hymenio distincte 

 limitatum, inferne (vel perithecium) cavernosum, et in hyphas laxe 

 arachnoideo-contextas, O.004 — O.003 mm crassas, modice aut leviter 

 pachydermaticas dissolutum. Stipes long. O.5 — 2 mm, crass. O.5 — 1 

 mm, albidus, KHO parum lutescens, chondroideus, extus impelluci- 

 dus, intus laceratus et hyphas arachnoideo-contextas parce conti- 

 nens. Conidangia „majuscula, tuberculiformia, cortice thallino albo 

 (demum disrumpente) tecta, conceptaculo supra nigricante, tenui; 

 sterigmata multi-articulata, elongata, crass. O.002 — O.003 mm", coni- 

 dia „recta, long. O.005, crass, vix O.ooi mm" (Nyl. 1. c, t. VI f. 

 20, 21). 



Obs. In Fr. Nov. Sched. Crit. I (1826) p. 15 n. 230 mentio fit de 

 formis sequentibus: B. roseus b. coccodes Fr., qui a Schaer. (Enum. 

 Lich. Eur. p. 183) „stipitibus ventricosis, apice roseis" describitur. 

 F. 1) praesens Fr., „ubique in ericetis obvia, podetiis cylindrico-ven- 

 tricosis, apice apothecio isidiimorpho". F. 2) palustris Fr., „candida, 

 Lich. frigido similis, locis hieme inundatis". 



Trib. 15. Lecideales Vain. 



Thallus crustaceus aut squamosus aut raro minute 

 foliaceus, heteromericus aut in statu minus evoluto homoe- 

 omericus aut e mycelio gonidiis destitute constans. Stratum 

 corticale baud evolutum aut superne thallum obtegens, 

 cartilagineum, loculis cellularum angustis. Stratum medul- 

 lare stuppeum. Gonidia in zona supra stratum medullare 

 disposita aut in toto thallo obvenientia, viridia, simplicia 

 aut glomerulosa (raro simul cyanophycea in parathallis). 

 Apothecia demum thallo adpressa adnatave, aut rarius 

 immersa permanentia, aut stipitata podetiove instructa. 

 Excipulum gonidiis destitutum, cartilagineum aut plecten- 

 parenchymaticum, strato medullar! stuppeo nullo (peri- 

 thecium lecideinum) aut raro evoluto (perithecium hemi- 

 lecanorinum). Paraphyses evolutae, simplices aut rarius 

 ramoso-connexae. Sporae endosporio baud incrassato, 

 sed exosporio interdum (in Rhizocarpo, cet.) gelatinoso- 

 incrassato. 



