CONTENTS 



1. Observations on the morphology of the underground stems of 



Symplocarpus and Lysichiton, together with some notes on 

 geographical distribution and relationship, C. Otto Roscn- 

 dahl 137 



2. Some effects of severe frost upon vegetation in a condition of 



active growth, Frederic K. Butters and C. Otto Rcsendahl. . . . 153 



3. Notes on the species of Liagora and Galaxaura of the Cen- 



tral Pacific. Frederic K. Butters 161 



4. Nova fungorum coloradensium genera. Frederic E. Clements. .. . 185 



