A 



MANUAL 



OF THE 



MOSSES 



OF 



WESTERN 

 PENNSYLVANIA 



OTTO E. JENNINGS, PH. D. 



WITH FIFTY-FOUR FULL-PAGE PLATES FROM 

 DRA^-INGS BY THE AUTHOR. 



PIJHI>ISHK1> nY THK Al'TIIOR. 1013.' 



^ ^ >f 



1»BESS OF 



THE CITY MISSION PUHLISIIING COMPANY 



X -^H C01-I.-INS AVBNVK, EAST END, 



PiTTSBvnCH, Pa. 



