Irmgard Degener née Hansen (1924-xxxx) from Berlin in 1952 or later
1899 in East Orange, New Jersey
1988
MA from the University of Hawaii in 1922 and his PhD from Columbia University
United States of America
O. D., Isa Degener & Oscar Klement (1897-1980): Flora Hawaiiensis or New illustrated flora of the Hawaiian islands (New York City 1932f. / 1937, several volumes) ;
