254 FLORA OF MOUNT DESERT. 



PARMELIEI. 



THELOSCHISTES, Norm. 



* T. chrysophthalmus (L.), Norm. 



On shrubs. (Eckfeldt.) 

 T. parietinus (L.), Norm. 



On rocks. Eastern coast (Eckfeldt, Wilson, Kedfield). On 

 dead trees. Somesville (Rand). 



T. polycarpus, Ehrh. 



On trees and dead wood. (Eckfeldt) ; Seal Harbor 

 (Wilson). 



T. lychneus, Nyl. 



On trees and rocks. (Eckfeldt); Seal Harbor (Wilson). 



* T. concolor, Dicks. 



On rough barks. (Eckfeldt.) 



PARHELIA, Ach. 

 P. perlata (L.), Ach. 



(Eckfeldt); Seal Harbor (Wilson). 

 *P. perforata (Jacq.), Ach. 

 On tree trunks. (Eckfeldt.) 



* P. cetrata, Ach. 



On rocks. Seal Harbor (Eckfeldt). 

 P. crinita, Ach. 



On rocks. Seal Harbor (Wilson). 

 P. aurulenta, Tuck. 



On tree trunks and rocks. (Eckfeldt.) 

 P. tiliacea (Hoffm.), Floerke. 



On trees and stones. (Eckfeldt); Seal Harbor (Wilson). 

 P. Borreri, Turn. 



On rocks and trees. Seal Harbor (Wilson). 



