MONOGRAPHS IN SYSTEMATIC BOTANY 
FROM THE MISSOURI BOTANICAL GARDEN 
Volume 37 
October 1990 
ISSN 0161-1542 
The Flora of Missouri Project 
is a collaborative effort between 
the Missouri Department of Conservation 
and the Missouri Botanical Garden. 
Y 
Cover design and illustration of Cornus florida 
by Kay Yatskievych 
Copyright © 1990 by Missouri Botanical Garden 
All rights reserved. 
Printed in the United States of America by 
Braun-Brumfield, Inc., Ann Arbor, Michigan 
