Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 287 



Distr. Ad rupes et saxa, praesertim granitica et 

 silacea, locis apricis et ad lapides in silvis frequenter per 

 totum territorium et in omnibus regionibus (Norrl. Ber. 

 Torn. Lappm. p. 340, Vain. Adj. Lich. Lapp. II p. 135, 

 Nyl. Lich. Lapp. Or. p. 162, Kihlm. N. Beitr. Flecht. Kola 

 p. 59). 



F. fuscescens (Leight.) Vain. L. petraea f. fuscescens Leight. 

 Lich. Great Brit. 3 ed. (1879) p. 376; Vain. Adj. Lich. Lapp. II (1883) 

 p. 136. 



Thallus verrucis cinereo-fuscescentibus, KHO non reagentibus,^ 

 addito CaClaOa intus subfulvescentibus, medulla jodo leviter aut rarius 

 intense caerulescente. Epithecium subviolaceo-fuligineum, KHO distinc- 

 tius violascens. 



Distr. Sat frequens. 



F. parapetraea (Nyl.) Vain. (Exp. Antarct. Belg. Lich. p. 32,. 

 L. atroalba ,i. vera Naeg. man. in Hepp Flecht. Eur. I, 1853, n. 37 sec. 

 Stizenb. Lich. Helv. I p. 200) verrucis KHO cum CaCLOo intus rube- 

 scentibus ab hac forma differt. In Fennia nondum collecta. 



F. atrocaesia (Nyl.) Blomb. et Forssell Enum. PL Scand. (1880) 

 p. 94. L. petraea f. atrocaesia Nyl. Fl. 1876 p. 239. L. parapetraea *atro- 

 caesia Nyl. Enum. Lich. Fret. Behr. (1888) p. 15. L. atrocaesia Nyl. 1. c. 

 p. 51. 



Thallus verrucis cinereis, circ. 0.8—0.3 mm latis, KHO non rea- 

 gentibus, addito CaCloOa intus rubescentibus. Epithecium rubricosunx 

 aut subviolaceo-fuligineum, KHO distinctius violascens. 



Distr. Frequens. 



F. petraeiza (Nyl.) Vain. L. petraeiza Nyl. Fl. 1879 p. 221. 

 L. grandis f. petraeiza Vain. Lich. Caucas. p. 319, Lich. Exp. Vegae 

 Pitlekai p. 112. L. petraea y. pusilla Hepp Flecht. Eur. II (1857) 

 n. 314. 



Thallus verrucis subcinerascentibus, nee KHO, nee CaCLOo rea- 

 gentibus, medulla jodo leviter caerulescente. Epithecium subviolaceo- 

 nigricans, KHO distinctius violaceum. 



Distr. Supra lapidem graniticam ad Nikola in KOI. (F. Elfving). 



F. Elfvingii Vain. 



Thallus verrucis subcinerascentibus, in solutione jodetica baud 

 distincte reagentibus, sed demum exsiccatis dilute violascentibus, KHO 

 cum CaClaOa rubescentibus. Epithecium atrum, KHO subviolaceo- 

 fuligineum. 



Distr. Supra lapidem graniticam ad Stjeliki in KOI. (F. Elfving). 



