Chamairo: Mussatia Hyacintha — An Admixture to Coca from 
Amazonian Peru and Bolivia 
by Timothy Plowman ..........ceeeeeee ccc eceeees 253 
Wallace, Spruce and Palm Trees of the Amazon: 
an Historical Perspective 
by Michael. J. Balick «454s nesses esau ses weasinwes 263 
De Plantis Toxicariis e Mundo Novo Tropicale 
Commentationes XXIX. A Suspected New Amazonian 
Hallucinogen 
by Richard Evans Schultes..........es eee eeecenees ZT 
NuMBER 4 (December 1980) 
A Generic Revision of the Spiranthinae 
by Leshe A. Ganey oscctresaranesatsecesiseres tees ZiT 
[vi] 
