

UNITED STATES 



EXPLORING EXPEDITION. 



DURING THE YEAKS 



1838, 1839, 1840, 1841, 1842. 



UNDER THE COMMAND OF 



CHARLES WILKES, U.S.N. 

 VOL. XVII. 



BOTANY. 



CRYPTOGAMIA. 



MUSCI-Bx WILLIAM S. SULLIVANT. i ALG^-Bx J. W. BAILEY and W. H. HARVEY. 



LIGHENES-By EDWARD TUCKERMAN. | FUNGI-By M. A. CURTIS and M. J. BERKELEY. 



PHANEROGAMU 



OF PACIFIC NORTH AMERICA, 

 By JOHN TORREY. 



EDITED BY ASA GEAY. 



PHILADELPHIA: 



PRINTED BY SHERMAN & CO. 



1874. 



23003A 



