TABLE OF CONTENTS 
NuMBER 1 (May 25, 1951) 
Orchidaceae Peruvianae VII 
By CHARLES SCHWEINFURTH 
NuMBER 2 (June 29, 1951) 
Plantae Austro-Americanae VII 
By RicHarp Evans ScCHULTES . 
NuMBER 8 (August 15, 1951) 
Orchidaceae Peruvianae VIII 
By CHARLES SCHWEINFURTH 
NuMBER 4 (January 21, 1952) 
Studies in the Genus Hevea IV 
By Ricuarp Evans SCHULTES . 
NuMBER 5 (February 21, 1952) 
Orchidaceae Peruvianae IX 
By CHARLES SCHWEINFURTH 
NuMBER 6 (March 12, 1952) 
The Pre-Columbian Occurrence of Lagenaria Seeds 
in Coastal Peru 
By MarGaret ASHLEY TowLeE 
A New Aristolochia from Amazonian Colombia 
By Ricuarp Evans ScCHULTES . 
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