EXPLANATION OF THE ILLUSTRATION 
Prare XXIII. (Upper) Marista [propor Cuatrecasas. 
A branch from the type of Matisia Idroboi. 
(Lower) Bompax cortaceum Martius & Zucc. Flow- 
ering branch of the shrub from which Schultes & 
Cabrera 18316 was taken. 
Photographs by Ricuarp Evans Scuutres 
N.B. The upper and lower captions, as printed, 
should be reversed. 
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