VOL. 38 MARCH, 19I1 NO. 3 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
€ditor 
PHILIP DOWELL 
Associate Cditors 
JOHN HENDLEY BARNHART Tracy Evtiot HAZEN 
JEAN BROADHURST MARSHALL Avery Howe 
Ernest Dunsar CLARK HERBERT MAULE RICHARDS 
ALEXANDER WILLIAM EVANS NORMAN TAYLOR 
CONTENTS 
The ferns and flowering plants of Nantucket—VII. EUGENE P. BICKNELL 103 
Upon assimilation of atmospheric nitrogen by fungi. . L. H. PENNINGTON 135 
Two new species of Opuntia. . . . BERNARD MACKENSEN rq: 
Two new species of edible fruits from Mexico. oe _ . HB. H. RUSBY 145 
INDEX TO AMERICAN BOTANICAL LITERATURE......-.. 147 
PUBLISHED FOR THE CLUB 
THE NEW ZRA PRINTING COMPANY 
LANCASTER, PA. 
