136 



thecium rubricoso-, fusco-, violascenti- (vei raro smarag- 

 dulo-) fuligineura, K fere — . Hypothecium fuscescenti- 

 nigricans. 



— f. atroccesia Nyi. Secuudum spec. orig. L. petrsea f. atro- 



cfesia Nyi, Y\. 1876 p. 239, huc pertinet (K — , Cä 

 Cl— K(CaCl)— !, I+). 



Thallo cinerascente. — Frequens in toto territorio. 



— f, fuscescens Leight., Lich. Great Brit. 3 ed. p. 376. 



Thallo fuscescente. — Minus frequens. 



— f. epichlora m. 



Epithecium smaragdulo-fuligineum. — In latere 

 rupis ad Lehtovaara in par. Kianta in regione infralap- 

 ponica Ostrobotnise. — Thallus cinerascens, medulla 

 jodo cserulescente. Sporse primum smaragdulse vei raa- 

 ture nigricantes. 



*L. eupetrcea Nyi, Fl. 1870 p. 36. L. petraa Nyi., Scand. 

 p. 233, pr. p. Rhizocarpon grande Arn., Tirol XXI p. 

 142, saltem pr. p.; Th. Fr., Lich. Scand. p. 624, pr. 

 p. Etiam L. parapetra?a Nyi., Fl. 1881 p. 188, verisi- 

 militer huc pertinet (reactione Ca Cl -\- differens). 



Thallus verrucosus vei verrucoso-areolatus, cinera- 

 scens vei albidus, hydrate kalico primum lutescens vei 

 rarius flavescens, dein sangvineorubens (rarius fuscoru- 

 bescens). Medulla jodo caerulescens (sat dilute vei in- 

 tense). Apothecia sicut in preecedente. Epithecium 

 rubricoso- vei fusco-, rarius olivaceo-fuligineum. Sporse 

 mature nigricantes, loculis haud numerosis (sicut in 

 prsecedente aut paucioribus), longitudine 0,026 — 0,034 

 millim., crassitudine 0,011 — 0,015 millim. 



Sat frequens in toto territorio et in omnibus re- 

 gionibus. In L. petrcenm interdum transit (velut in 

 spec. e Kianta, Pietari) thallo obscurius cinerascente, 

 K fere — , sed verrucis nonnullis pallidioribus K -f- 

 primum lutescentibus, dein sangvineorubentibus. — In 

 L. eupetrcea Cä Cl — (vei decolorans), K(Ca Cl) fere — 

 vei sat indistincte rubescens. 



