CONTENTS 



PAGE 



Preface ix 



A Discussion of Pogonia and its Allies in the Northeastern 

 United States with References to Extra-limital Genera 

 and Species 3 



Notes on Mexican Species of Triphora 39 



A Triandrous Form of Psilochilus macrophyllus 45 



Studies of Otostylis brachystalix and the Species with 

 which it has been confused 49 



Notes on Er5rthrodes with Nomenclatorial Changes and 

 Descriptions of Three New Species 63 



Nomenclatorial Changes in Dendrochilum 79 



New or Noteworthy Orchids from Different Parts of the 

 World 83 



Additions to the Orchid Flora of the Mountain Province, 

 Luzon 141 



Two New Species of Malaxis from Haiti 156 



A New Oncidium from Haiti 159 



Summary of New Genera, New Species and New Combi- 

 nations proposed in the Present Volume 161 



Index • 169 



