Pseudopyrenula. 209 



Thallus crassitudine mediocris aut sat tenuis, glaucescens 

 [aut stramineo-glaucescens], nitidulus. Apotliecia in pseudostromata 

 subrotundata vel irregulariter ellipsoidea, hemisphaerica, albida, 

 intus albida [aut e cellulis substrati parcius inclusis sordidescentia] 

 immersa. Ferithecmm globosum, fuligineum, integrum. Sporae 

 8:nae, oblongae, 3-septatae, long. 0,oi7 0,0 2 3, crass. 0,oo7 0,oo8 

 millim. 



Ad corticem arboris prope Rio de Janeiro, n. 164, 178. 



Thallus laevigatus, strato corticah, amorpho, semipeUucido, crasso 



instructus. Gonidia chroolepoidea, circ. 0,oo8 0,oo6 millim. crassa, 



membrana sat tenui. Pseudostromata praecipue e strato corti- 



caU thaUi formata, in partibus inferioribus parcius cellulas sub- 



strati continentia. Nucleus globosus, jodo non reagens. Para- 



physes 0,ooi millim. crassae, bene ramoso-connexae. Asci sub- 



cyUndrici aut cylindrico-clavati. Sporae distichae, decolores, api- 



cibus rotundato-obtusis, saepe halone indutae, loculis lenticulari- 



bus, apicalibus vulgo reliquis paullo majoribus. 



7. Ps. ochroleuca (Eschw.) Wainio. Verrucaria Escliw. in 

 Mart. Icon. Sel. (1828) tab. 8 fig. IV et ni 16, Fl. Bras. (1833) 

 p. 135. Trypetkelium ochroleucum Nyl., El. 1869 p. 126; Miill. Arg., 

 Rev. Lich. Eschw. (1884) p. 7, Pyr. Cub. (1885) p. 391, Pyr. 

 Feean. (1888) p. 13. 



Thallus hypophloeodes aut substrato inunixtus, macula vulgo 



stramineo-glaucescente aut glaucescente, opaca aut nitida indicatus. 



Apothecia aggregata et pseudostromatibus plus minusve distinctis, 



difformibus, extus stramineo-albidis, intus (substrato) sordidis palle- 



scentibusve immersa. Perithecium conoideo- vel depresso-subglo- 



bosum (superne in coUum conoideum angustatum), tenue integrum- 



que aut basi tenuissimum deficiensve, fuhgineum aut fuscescens aut 



passim sordide palhdum. Sporae 8:nae, oblongae aut raro ovoideo- 



oblongae, 3-septatae, long. 0,oi4 0,027, crass. 0,oo8 0,oio milhm. 



Var. pallescens (Fee) Mull. Arg., Pyr. Cub. (1885) p. 392. 

 Irypethelium x>allescens Fee, Mon. Tryp. (1831) p. 31, tab. 13 fig. 3. 



Pseudostromata pulvinuhformia, irregulariter rotundata ob- 

 longave aut difformia, depresso-hemisphaerica convexaque. 

 Ad corticem arborum locis numerosis prope Rio de Janeiro et 

 Sepitiba in eadem civitate, n. 432. 



Var. effusa MiiU. Arg., Pyr. Cub. (1885) p. 392 (em.). 



Pseudostromata tenuia depressaque, aut evanescentia. 



14* 



