76 



NATURAL HISTORY BULLETIN. 



P. ADGLUTiNATA [^Floerk.) Nyl. Trees. Winneshiek, Fay- 

 ette, Bremer, Clayton, Shelby. Johnson, Linn, Story, Dick- 

 inson and Floyd. 



PYXINE Fr. Tuck. 



P. soREDiATA Fi'. Rocks. Johnson, Fayette. 



Fam. PELTIGEREI. 



STICTA {Schrcb.) Fr. 



S. PULMONARiA (/.. ) Ac/i. Trees. Clayton. 



PELTIGERA ( Wind., Hoffm.) Fee. 



P. HORizoNTALis (Z.) Hofiu. From the Iowa List of 1884. 



P. POLYDACTVLA \JVeck.\ IIoff)u. Earth along shady hill- 

 sides. Fayette. Linn. 



P. PULVERUi>ENTA ( Tiiyl . ) jVyl. Earth along shady hillsides. 

 Fayette. 



P. RUF'ESCENS [jVeck.'^i Hof)ii. Earth along shady hillsides. 

 Fayette, Bremer, Clayton. 



P. CANiNA ^L.) Ilof.ni. Earth. Winneshiek, Fayette, Bre- 

 mer. Clavton, Shelby. Johnson, Linn. Muscatine, Story, Lee. 



P. CANINA (Z.) Ilofni., var. spuria Ach. Clay banks. Fay- 

 ette, Bremer, Johnson. 



P. CANINA (Z.) Hoffm.. var. sorediata Sclicer. Earth in 

 moist shady places. Fayette. 



Fam, PANNARIEL 



HEPPIA AWo-. 



H. despreauxii (^Mont. ) Tuck. Calcareous earth. Fayette. 



