4 BKITI8H LICHENS : 



23. Coniocybe Ach. Thallus pulverulent: apothecia stipitate, 

 globoso-pulverulent, yellowish, with simple, colourless or yellowish 

 spores; spermogones with simplish sterigmata and cylindrical, 

 straight spermatia. 



24. Trachylia FT. Thallus granulose : apothecia cupuliform, 

 sessile, black, with 1-septate, blackish spores; spermogones with 

 simplish sterigmata and oblong or ellipsoid spermatia. 



Tribe II. SPHJEROPHOREI Nyl. Thallus fruticulose, branched : 

 apothecia terminal, innate, closed, at length open and variously 

 dehiscent. 



25. Sphaerophorns Pers. Thallus caespitose : apothecia globose, 

 with spherical violet-black spores ; spermogones with simplish short 

 sterigmata and oblong spermatia. 



Series II. CLADODEI Nyl. Apothecia terminal on podetia, 

 rarely sessile, biatorine. rarely lecanorine. 



Tribe III. B2EOMYCETEI Nyl. Thallus horizontally expanded : 

 apothecia substipitate. 



26. GrOmphillus Nyl. Thallus gelatinoso-conglutinate : apothe- 

 cia stipitate, clavato-capitate with filiform multiseptate spores ; sper- 

 mogones with simple sterigmata and cylindrical spermatia. 



27. Baeomyces Pers. Thallus crustaceo-granulose or subsqua- 

 mulose : apothecia stipitate or sessile, biatorine, with simple or 

 1-3-septate spores ; spermogones with jointed sterigmata and straight 

 spermatia. 



Tribe IV. PILOPHOREI Nyl. Thallus verrucoso-granulate with 

 rigid podetia : apothecia cephalodine on the podetia, with paraphyses 

 prolonged into the hypothecium. 



28. Pilophorus Fr. fil. Thallus bearing cephalodia : apothecia 

 subglobose, black, with simple spores ; spermogones with simplish 

 sterigmata and curved or straight spermatia. 



Tribe V. STEREOCAULEI Nyl. Thallus csespitose, podetiiform, 

 solid : apothecia terminal or lateral, lecideine or rarely lecanorine. 



29. Stereocaulon Schreb. Thallus bearing cephalodia; podetia 

 covered with fragile granules : apothecia brownish or blackish, with 

 3-9-septate spores ; spermogones with simple sterigmata and sub- 

 bacillar, straight or slightly curved spermatia. 



30. Leprocaulon Nyl. Thallus not bearing cephalodia, with 

 pseudo-podetia, which are more or less leprose : apothecia and 

 spermogones unknown. 



