KEY TO THE ARRANGEMENT. 



15 



oblong, or fusiform, simple, or bi-quadri-plurilocular, 

 or at length, rnuriform-multilocular, uncoloured. 

 Thallus now lobulate, mostly uniform. 



66. STAUROTHELE. Apothecia immersed in thalline warts ; 



perithecium blackening; amphithecium pale; para- 

 physes obsolete. Spores ellipsoid, muriform-multi- 

 locular, brown, or decolorate. Thallus somewhat 

 lobulate, or uniform. 



Sub-Fam. 2. TRYPETHELIEI. Many apothecia collected 

 in a verruca3fonn stroma. 



67. TRYPETHELIUM. Apothecia (1-00) immersed in a 



stroma; perithecium reduced, blackening; amphithe- 

 cium black; paraphyses distinct. Spores ellipsoid, 

 and oblong, 4-plurilocular [or, in exotic species, muri- 

 form - multilocular] brown, or decolorate. Thallus 

 uniform, mostly obscure, or disappearing. 



>ub-Fani. 3. PYRENULEI. Apothecia solitary, or now 

 confluent j perithecium black. 



68. SAGEDIA. Apothecia innate -superficial; perithecium 



black; amphithecium pale, or at length blackening; 

 paraphyses distinct, or now obsolete. Spores from 

 cymbiform fusiform, at length acicular quadri-pluri- 

 locular, colourless. Thallus uniform, or disappearing. 



69. VERRUCARIA. Apothecia innate; perithecium black; 



amphithecium pale, or finally blackening; paraphyses 

 slender and for the most part indistinct or obsolete. 

 Spores ovoid-ellipsoid, simple, or bi-quadrilocular, 

 or finally muriform-multilocular, decolorate. Thallus 

 uniform, somewhat tartareous, rarely areolate-squaina- 

 ceous. 



70. PYRENTJLA. Apothecia somewhat prominent; peri- 



thecium black; amphithecium pale, or blackening; 



