264 FLORA OF MOUNT DESERT. 



* Var. confragosa, Nyl. 



On rocks. (Eckfeldt.) 

 *R. constans (Nyl.), Tuck. 



On old trees. (Eckfeldt.) 



PERTUSARIA, DC. 

 P. velata (Turn.), Nyl. 



On trees and rocks. (Eckfeldt); Seal Harbor (Kedfield), 

 *P. leioplaca (Ach.), Schaer. 



On trees and rocks. (Eckfeldt.) 

 *P. pustulata(Ach.), Nyl. 



On trees. (Eckfeldt.) 



CONOTREMA, Tuck. 

 C. nrceolatum (Ach.), Tuck. 



On trees. Seal Harbor (Wilson). 



GYALECTA, Ach. 

 *G. lutea (Dicks.), Tuck. 



On bark of trees. (Eckfeldt.) 

 *G. Pineti (Schrad.), Tuck. 



On bark of trees. (Eckfeldt.) 



URCEOLARIA, Ach. 



* U. scmposa (L.), Nyl. 



On rocks and earth. (Eckfeldt.) 



THELOTREMA, Ach. 



* T. lepadixmm, Ach. 



On tree trunks. (Eckfeldt.) 



