of the Southeastern United States,” and Gray’s “New 
Manual of Botany.” The “Illustrated Flora of the Northern 
States and Canada” is especially valuable because of the 
illustrations and the synonyms given under each species. 
In the preparation of this little book we have been as¬ 
sisted by many persons, to whom we wish to express our 
thanks. We are especially indebted to the late Dr. A. H. 
Van Vleet for his assistance in classifying and determining 
the range of a great many of the species; to Dr. R. E. Jeffs 
and Dr. Paul B. Sears, who made valuable suggestions; and 
to Margaret Linn, Lucille Robertson, and Andy Campbell, 
students in our botany classes at Central High School for 
preparing the index. Our students have furnished us with 
specimens collected in many parts of the state. 
Oklahoma City, Oklahoma. 
February, 1929. 
Thomas R. Stemen, 
W. Stanley Myers. 
