TABLE OP CONTENTS 



Note i 



Keport on Recent Collections 5 



New Species of Fungi 5 



Additions to the Reported Flora of the State 12 



The Prairiegrass Formation in Region 1 29 



Introduction 29 



Discussion of Ecological Factors 32 



Ecological Factors 38 



Temperature and Atmosphere 38 



Water-content 43 



Light Intensity 46 



Enumeration of Species in the Formation 51 



Structure of the Formation 54 



Elements of the Prevernal Floral Aspect 57 



Elements of the Early Vernal Floral Aspect 60 



Elements of the Late Vernal Floral Aspect 66 



Elements of the Early Estival Floral Aspect 71 



Elements of the Late Estival Floral Aspect 81 



Elements of the Serotinal and Floral Aspect 86 



Quadrat Lists 95 



Legend 126 



Map of the Formation opp. 126 



Quadrat Maps 127 



Phenological Record 137 



