PREFACE 
We have felt a need of a Key and Flora of the spring 
flowering plants of Oklahoma for high school students. 
This little book has been prepared for the express purpose 
of fulfilling that need in the authors’ biology and botany 
classes. Although it is especially prepared for high school 
students, it may be equally useful to more advanced stu¬ 
dents or anyone interested in the identification of the 
spring flowers of Oklahoma. 
It is our aim to include all of the spring flowering plants 
of the state. We believe that this Flora is incomplete, but 
hope that it will serve as a beginning in this field. We 
would appreciate co-operation of our co-workers in supply¬ 
ing us with specimens of species not listed in this Key and 
Flora. 
We have followed the American Code of Nomenclature. 
The species described in this Flora have been collected 
by the authors from every section of the state, but the 
regions most thoroughly covered are the south central, the 
southwestern, western, and especially the central parts of 
the state. 
Following the description of many of the species is given 
the locality in which they were collected. No doubt, these 
species will be found in other localities having a similar 
environment. The usual habitat is also given after each 
plant description. 
There are 90 families, 265 genera, and 476 species in¬ 
cluded in this Flora. 
The following Manuals should be in every school library 
for ready reference: Britton and Brown’s “Illustrated 
Flora of the Northern States and Canada,” Small’s “Flora 
