NUMBER 7 (Sept. 30, 1978) 
Fossil Pollen and the Origin of Corn. Ancient Pollen from 
Deep Cores in Mexico Shows the Ancestor of Corn to be 
Corn and not its Relative, Teosinte 
by PAUL C. MANGELSDORF, ELSO S. BARGHOORN 
AND UMESH C. BANERJEE ....cc.scccceereccessensstoseenacens 234 
NUMBER 8&8 (Oct. 31, 1978) 
Effects of Field Preservation on the Flavonoid Content of 
Jessenia Bataua 
by GILLIAN A. COOPER-DRIVER AND 
MICHAEL. al. BAGICR. -csssadsescevicecsass aanchews test parerar es 257 
NUMBERS 9 -10 (Nov.-Dec. 1978) 
A Neglected Mayan Galactagogue. Ixbut 
(Euphorbia lancifolia) 
by FREDERIC ROSENGARTEN, JR. ......scsscecseeeeesneeeeees 277 
Evolution of the Identification of the Major South 
American Narcotic Plants 
by RICHARD EVANS SCHULTES: sccsasecisnssarnoreermeateees 311 
The Correct Name for Siberian Ginseng 
by DyaAJA D. SOEJARTO AND 
NORMAN R. FARNSWORTH ceccacsatiiees etactseerterresremeee JOP 
V1 
