PRODROMUS FLOR.E NOYO-GRANATENS1S. 375 



Obs. — Ab omnibus Graphideis cognitis facile distincta notis allatis et 

 jam sporis suis peculiaribus; inter Medusulas sit adscribenda. Apo- 

 thecia primo tecta, sensim evoluta stratum thallodes tegens rimose rum- 

 pentia ; inde apices eorum in rimis tegumenti altenuati saepius conspi- 

 ciuntur. 



II. — OPEGRAPHA Ach. 

 Nyl., Lich. Scandin., p. 252. 



1. Opegrapha Bonplandi^ Fée, Nyl., Lich. exot.,\). 229. 

 Bogota, altit. 2600-2700 metr., ad cortices (coll. Lindig. 2613). 



Obs. — Sporae incolores (vel demum fuscescentes) 7-9-septatse, longit. 

 mm , 035-40, crassit. circiter mm ,009. 



2. Opegrapha abbreviata Fée, Nyl., LicJi. ea>o£.,p. 229. — 

 Àpothecia oblonga sat parva. Sporae fusiformes 5-7-septat8e, lon- 

 git. mm ,027-33, crassit. mm ,007-8. 



Ad cortices arborum. Bogota, altit. 2/i00 metr. 



3. Opegrapha varia f. diaphora Ach., Nyl., Lich. Scandin., 

 p. 253. 



Bogota, altit. 2600, in sylva, ad corticem arborum (Lindig). 



Obs. — Sporaa fusiformes 5-septatae, longit. mm , 027-32, crassit. 

 mm , 007-8 (in speciminibus Lindigianis). — Opegrapha primana Nyl. 

 accedit, sed sporas habet 5-7-septatas majores (longit. mm , 050-48, 

 crassit. mm ,009-0 mm ,010); ad cortices in Nicaragua (hb. Tuck.). Vix 

 sistit nisi varietatem macrosporam Opegraphœ varice Pers.,Nyl., 1. c. 



/i. Opegrapha microsema Nyl. — Thallus albidus vel albido- 

 cinerascens tenuis opacus (fere leproso-insequalis) subdetermi- 

 natus; apolhecia rotundata lecideiformia vel ellipsoidea parva 

 (latit. mm ,3-0 mm ,5) prominula rugulosa, immarginata (juniora 

 tenuiter marginata); sporse fuscae vel fuscescentes ovoideo- 

 oblongœ 3-septatse, longit. mm ,0l2-U, crassit. mm ,005, hypo- 

 thecium fuscum. Gelatina hymenea iodo cœrulescens. 



