Volume 9 Number 4 
-MUHLENBERGIA 
APRIL, 1913 
Editors: A. A. HELLER and P. BEVERIDGE KENNEDY 
Quercus Douglasii 
CONTENTS: 
Additions to the Flora of South Dakota—I: S.S. Visher 45 
The Oaks of the Pacific Slope—II[: A. A. Heller 52 
Two new Species of Carduus from Colorado: George E. Osterhout 54 
