246 E. A. Vainio, Pyrenocarpeae. 



latis, primum hypothallo affixus, prolificationibus accrescens et basi 

 emoriens. 82. 



OO Thallus rhizinis basalibus substrato affixus. 



2. E. adsurgens Vain. Thallus subtus nigricans aut ambitum 

 versus albidus. 79. 



ft Gonidia hymenialia oblonga ellipsoideave. 



5. E. pulvinatum Th. Fr. Thallus squamis adscendentibus aut 

 suberectis, angustis, laciniis 1 — 0.3 mm latis, rhizinis destitutus. 84. 



/?. Thallus adnatus. 



3. E. pusillum Hedw. Thallus squamoso-areolatus, rhizinis in- 

 structus. 81. 



2°. Thallus superne pruinosus. 



6. E. moenium Vain. Thallus subtus albidus, rhizinis destitutus. 

 Apothecia incognita. Affinitate incerta. 85. 



Subtrib. 5. Lepidodidymae Vain. 



Thallus subfoliaceus aut squamosus. Paraphyses in 

 gelatinam diffluxae. Sporae decolores, 1 — 3-septatae. 85. 



1. Placidiopsis Beltram. 

 1. PI. cervinula Nyl. Thallus hyphis hypothallinis affixus. 86. 



Subtrib. 6. Dictyosporae Vain. 



Thallus crustaceus et gonidia continens aut e mycelio 

 gonidiis destituto constans. Paraphyses in gelatinam dif- 

 fluxae aut haud evolutae. Sporae murales, decolores aut 

 demum obscuratae. 87. 



1°. Thallus gonidia continens, haud supra alios lichenes 



crescens. 



1. Staurothele. Nucleus apothecii gonidia hymenialia continens. 

 87 (246). 



2. Polyblastia. Gonidia hymenialia nulla. 97 (247). 



2°. Parasitae lichenum, gonidiis destitutae. 



3. Merismatium. Sporae obscuratae. 109 (248). 



4. Pleosphaeropsis. Sporae decolores. 110 (248). 



1. Staurothele Norm. 

 Thallus crustaceus, gonidia pleurococcoidea continens. 



