MEMOIRS 



OF 



The New York Botanical Garden 



Volume 10, Number 2 



The Botany of the Guayana Highland-Part IV 



Bassett Maguire and John J. Wurdack and Collaborators 1 



The Morphology and Relationships of Diomma, Gen. Inc. Sed. 



William L. Stern and George K. Brizicky 38 



Taxonomic Relationships of Diomma Engler ex Harms 



Richard S. Cowan and George K. Brizicky 58 



Anatomy of Guayana Xyridaceae: Abolboda, Orectanthe, 



and Achlyphila __ c 



Sherwin Carlqubt 65 



Issued 30 April 1960 



