

FOREWORD 



THIRD in a series of fieldbooks, the present publication is, like 

 the first on wild flowers and the second on land snails, intended 

 primarily for amateur naturalists and nature lovers who wish to 

 become acquainted with the flora and fauna of Illinois. Dr. Leo R. 

 Tehon, the author, has since 1921 held the title of Botanist with the 

 Illinois Natural History Survey and is well acquainted with the 

 flora of the state. 



The introductory section includes a discussion of the various 

 shrub habitats of Illinois, directions for the use of botanical keys, 

 and keys to the families and genera of shrubs found growing wild 

 within the state borders. The descriptive section mentions 210 

 species and 27 varieties, representing 77 genera and 43 families. 

 This section contains, also, keys to the species and illustrations of 

 most of the shrubs described. A glossary is appended to aid the 

 beginning botanist in an understanding of technical terms. 



For a number of years, the Natural History Survey has systemat- 

 ically made collections of the Illinois flora and of records related to 

 it. The present manual reflects some phases of this activity. In 

 preparation is a complete report of the flora of the state. 



Miss Kathryn M. Sommerman, Artist and Entomological Assis- 

 tant for the Natural History Survey since 1939, made the accurately 

 detailed drawings for the 72 line figures that illustrate the field- 

 book. Adapting the material to the general format of the Survey's 

 manual series was the work of James S. Ayars, Technical Editor. 



Of the colored photographs reproduced in this fieldbook, those 

 of the Prairie Rose, Silky Dogwood and American Bittersweet are 

 by Ray R. Hamm, University of Illinois photographer ; that of the 

 Indigobush is by Dr. Tehon ; those of the Smooth Sumac and 

 Trumpetcreeper are by Mr. Ayars. 



This fieldbook is published in the hope that it will prove as use- 

 ful to the people of the state as have the two similar publications 

 that preceded it. 



Theodore H. Prison 



Chief 

 Urbana, Illinois 

 June 15, 1942 



