SYNOPSIS 



OF THE 



NORTH AMERICAN 



LICHENS : 



PART I., 



COMPRISING THE 



PARMELIACEI, CLADONIEI, AND CCENOGONIEI ; 



BY 



EDWARD TUCKERMAX, M.A., 



AUTHOR OF GENERA IJCHENUM. 



BOSTON : 



S. E. CASSItfO, PUBLISHE 



1882. 



K 



