288 E. A. Vainio, Lecideales. 



F. epichlora Vain. L. petraea f. epichlora Vain. Adj. Lich. Lapp. 

 II (1883) p. 136. L. grandis f. epichlora Vain. Lich. Exp. Vegae Pitlekai, 

 (1809) p. 111. 



Thallus verrucis cinerascentibus, KHO non reagentibus, CaCl202 

 non reagentibus (in specim. Fenn.) aut leviter rubescentibus (p. p. in 

 specim. Sibir.), his solutionibus unitis melius rubescentibus, medulla 

 jodo leviter caerulescente. Epithecium smaragdulo-fuligineum aut 

 sordide olivaceo-smaragdulum aut dilute olivaceum, KHO distinctius 

 smaragdulum aut baud reagens. Excipulum sordide violaceo-fuligineum, 

 KHO pulchrius purpureum. 



Distr. In latere rupis ad paludem turfosum prope Lehtovaara 

 in par. Kianta (Vain.). 



F. apopetraeoides Vain. (Lich. Exp. Vegae Pitlekai p. Ill) ver- 

 rucis KHO et CaCl202 unitis non reagentibus aut KHO solo intus 

 leviter lutescentibus ab hac forma recedit. 



F. cinereobullata (Vain.) Biomb. et Forss. En. PI. Scand. (1880) 

 p. 94. L. petraea var. cinereobullata Vain. Lich. Vib. (1878) p. 60. 



Thallus verrucis p. p. majoribus (2—0.5 mm latis), cinerascenti- 

 bus, KHO extus non reagentibus, intus leviter flavescentibus, CaCl202 

 non reagentibus, his solutionibus unitis intus bene rubescentibus. 

 Epithecium violaceo-fuligineum. Hypothecium fuscum. Sporae long, 

 circ. 0.030, crass. O.012 mm, septis transversis circ. 4, loculis mediis 

 bicellulosis, demum nigricantes. Medulla jodo baud intense caeru- 

 lescens. 



Distr. In lateribus saxorum ad litus maris prope Sacerdotium 

 pone Viburgum (Vain.). 



Proxima f. atrocaesiae (Nyl.). 



Obs. Rh. endamyleum Th. Fr., Lich. Scand. II (1874) p. 627, 

 tantum medulla thalli jodo caerulescente a Rh. grandi differe indicatur, 

 sed etiam in hoc posteriore medulla jodo leviter aut bene caerulescit, 

 quare hae species non distinguendae sunt. 



5. *Rh. eupetraeum (Nyl.) Arn. 



Lecidea eupetraea Nyl. Fl. 1870 p. 36; Hue Addend. II (1888) p. 

 217. L petraea *L. eupetraea Vain. Adj. Lich. Lapp. II (1883) p. 136. 

 Rh. grande f. eupetraea Th. Fr. Lich. Scand. II (1874) p. 624. Rh. eupe- 

 traeum Arn. Labrador (1896) p. 16. 



Exs. Malme Lich. Suec. Exs. I (1897) n. 14. -- Havaas Lich. 

 Norv. Exs. (1913) n. 424. 



Thallus crustaceus, uniformis, verrucosus, verrucis 

 vulgo dispersis, convexis, laevigatis, albidis aut cinera- 



