166 MIDDLESEX FLORA. 



RAMALINA, Ach., De Not. 



R. calicaris, (L.) Fr., var. fastigiata, Fr. 



Waltham, Natick. 

 R. calicaris, (L.) Fr , var. farinacea, Schaer. 



Walthain. 

 R. pollinaria, (Ach.) 



Natick. 

 R. polymorpha, (Ach.) 



Chelmsford, Waltham. 



CETRARIA (Ach.) Fr., Muell. 



C. Islandica, (L.) Ach. 



Cambridge, Watertown, Newton, Natick. , 

 C. aleurites, (Ach.) Th. Fr. 



Natick. 

 C. aleurites, (Ach.) Th. Fr., var. placorodia, Tuck. 



"Waltham, Chelmsford. 

 C. ciliaris, (Ach.) 



Cambridge, Waltham, Natick, Sherborn. 

 C, lacunosa, Ach. 



Cambridge, Waltham, Natick, Sherborn. 

 C. juniperina, (L.) Ach. 



Cambridge, Natick. 



EVERNIA, Ach., Mann. 



E. furfuracea, (L.) Mann. 



Chelmsford, Waltham. 

 E. prunastri, (L.) Ach. 



Cambridge, Watertown, Natick. 



USNEA, (Dill.) Ach. 



U. barbata, (L.) Fr., var. florid a, Fr. 



Waltham, Natick, Sherborn. 

 U. barbata, (L.) Fr., var. hirta, Fr. 



Waltham, Natick. 

 U. barbata, (L.) Fr., var. dasypoga, Fr. 



Natick. 

 U. angulata, Ach. 



Chelmsford. 

 U. trichodea, Ach. 



Chelmsford. 

 U. longissima, Ach. 



Waltham. 



