3^ NATURAL HISTORY BULLETIN. 



B. MUSCORU-M (SzL>.). Earth. Fayette. 

 B. UMBRiNA (Ac/i.). Calcareous rocks. Fayette. Linn. 

 LECIDEA \Ar//.) FL. Tuck. 



L. ENTEROLEUCA Fr . Trecs. Fayette, Dickinson. Floyd, 

 Shelby. 



L. ENTEROLEUCA Fv., var. THEIOPLACA Tiick. Dickinson. 



L. MELANCHEL^LV Tiick. Old boards. Fayette. 



L. ACCLiNis F/ot. On Popiiliis. Fayette. 



BUELLIA Dc Xot.. Tuck. 



B. SPURIA [Schcer.) Am. Granitic rocks. Fayette. Bremer. 



B. ALBO-ATRA {Hoffiu.) Til. F)\. zav. sAXicoLA. Fr . Cal- 

 careous rocks. Fayette. 



B. PARASEMA (ylr//. ) Th. Fr. Trees. Fayette, Bremer, 

 Clavton. Shelby. Linn. 



B. PARASEMA ulr//. I 77/., Fr.. zar. triphragmia. JTyJ. 

 Trees. Fayette. 



B. puuuATA Tuck. Granitic rocks. Fayette. A Californian 

 lichen, but ours agrees best here. 



B. MVRiocARPA (DC.) Miidd. Wood. Fayette. Dickinson, 

 Johnson. 



Fam. OPEGRAPHEI. 

 OPE GRAPH A {Hiimb.) Ac/i.. Ay/. 



O. DEMissA Tifck. Trees. Fayette. 



O. VARL\ iPcrs.) Fr. Trees. Fayette. Johnson. Dickin- 

 son and Floyd. 



O. VARiA (Pers.) Fr.. zar. publicaris {^Hoffin.) Fr. 

 Trees. Favette. 



