260 FLORA OF MOUNT DESERT. 



PANNARIA, Delis. 



P. lanuginosa (Ach.), Koerber. 



On rocks. (Eckfeldt) ; caves, Barr Hill (Redfield). 



* P. hypnorum (Hoffm.), Koerber. 



On tree trunks and on the earth. (Eckfeldt.) 



* P. granatina, Sommerf . 



On rocks. (Eckfeldt.) 

 P. rubiginosa (Thunb.), Delis. 



On rocks. Seal Harbor (Wilson). 

 P. leucosticta, Tuck. 



On rocks among dead nioss (Eckfeldt). 

 P. brunnea (Swz.), Mass. 



On the ground. Crystal Cove, High Head (Rand). 

 P. plumbea (Lightf.), Delis. 



On old oak. Newport Mt. (Tuckerman). On rocks. (Wilson, 

 Eckfeldt.) 



P. nigra (Huds.), Kyi. 

 On rocks. (Eckfeldt.) 



COLLEMEI. 



OMPHALARIA, Dur. & Mont. 

 0. phyllisca (Wahl.), Tuck. 



Frequent upon rocks, Seal Harbor (Wilson). 



COLLEMA, Hoffm. 

 C. leptalenm, Tuck. 



On tree trunks. Seal Harbor (Wilson). 

 C. fiaccidum, Ach. 



On old trees and stumps. Seal Harbor (Wilson) ; Stanley 

 Brook (Redfield). 



C. nigrescens (Huds.), Ach. 

 On tree trunks. (Eckfeldt.) 



