Plate 3 



A. ARTHONIA RADIATA (PERS.) ACH. 



Plants on tree trunk, showing the irregular apothecia and the whitish coloration caused 



by the thallus. Enlarged V/% diameters. 



B. GRAPHIS SCRIPTA (L.) ACH. 



Plants on tree trunk, showing the elongated and variously curved apothecia, and the 

 whitish coloration caused by the thallus. Enlarged l-)4 diameters. 



