CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 



GARDEN— No. 52 



THE POLYPORACEAE OF NORTH AMERICA-V1I. 



THE GENERA HEXAGONA, GRIFOLA, ROMELLIA, 

 COLTRICIA AND COLTRICIELLA 



By WILLIAM ALPHONSO MURRILL 



NEW YORK 

 1904 



[From the Bulletin of the Torrey Botanical Club, 31 : 325-348. June, 1904] 



