108 Acta Societatis pro Fauiui ct Flora feuDica, VII. 



lares aut pro partc fcre monyticliae, dccolorcs, apicibus rotundatis 

 aut obtusis, mcmbrana circ 0,oo6 0,oor> niillini. crassa, strato 

 exteriore paullo crassiorc. Pycnoconidia long. 0,023 0,013, crass. 

 0,0 00 5 millim., recta" (Nyl., 1. c). 



Stirps 2. Leioplacae Miill. Arg. Fseiulostramata subglobosa 

 aut hemisphacrica, bcnc evoluta, basi constricta aut dilatata. 

 Disd thallum fere aequantes aut lcviter prominuli. 



Miill. Arg., Lich. Beitr. (Fl. 1884) n. 735. 



5. P. tuberculifera Nyl., Lich. Nov.-Gran. (1863) p. 448 

 (mns. Paris.), Fl. 1869 p. 12i; Krempelh., FL 1876 p. 218; Miill. 

 Arg., Lich. Beitr. (Fl. 1884) n. 768. P. leioplacoides Miill. Arg., 

 Lich. Beitr. (Fl. 1881) n. 342. 



Thalliis mediocris aut sat tenuis, subcontinuus, leviter ver- 

 ruculoso-inaequahs aut sublaevigatus, albidus aut glaucescens, 

 neque KHO, nec Ca Cl^ O2 reagcns. Pseudostromata thaho con- 

 coloria, circ. 1 3 [ 6] mihim. lata, depresso-subglobosa, basi 

 vulgo demum plus minusve constricta, apice convexo aut rarius 

 leviter concaviusculo, verrucuhs osteolaribus sparsis, parvuhs, 

 mamillari-prominentibus aut ostiohs haud prominentibus, pseudo- 

 stroma aequantibus aut rarius leviter impressis, vulgo apothecia 

 plura aut raro solitaria (1 10) continentia. Sporae 8:nae 2:nae 

 aut solitariae, oblongae, long. circ. O,0 6 5 0,i8 0, crass. O,0 2 6 

 0,0 4 millim., membrana demum intus transversim undulato-striata 

 costatave, halone nullo. 



Ad corticem arborum in Brasiha sat frequenter provenit. 

 Medulla jodo non reagens, hyphis sat pachydermaticis, lumine 

 cellularum angusto instructis. Pseudostromata interdum sat con- 

 stanter apothecia solitaria continent (f. velloziae Wainio, ad Vel- 

 lozias in montibus Carassae in civ. Minarum proveniens, n. 1449), 

 strato corticali ex hyphis conglutinatis irregulariter contextis for- 

 mato obducta. Ostiola albida aut obscura [aut raro rubescentia]. 

 Paraphyses ramoso-connexae, circ. 0,ooi5 0,ooi millim. crassae. 

 Asci cylindrici, jodo caerulescentes. Sporae monostichae, deco- 

 lores, apicibus obtusis aut rotundatis, saepe intus membrana 

 (endosporio) bene incrassata, exosporio sat leviter incrassato. 



6. P. leioplaca (Ach.) Schaer., Lich. Helv. Spic. (1823) p. 

 66] Th. Fr., Lich. Scand. (1871) p. 316; Miill, Arg., Lich. Beitr. 



