EXPLANATION OF THE ILLUSTRATION 
Pirare XXVIII. Sopracta speciosa C. Schweinfurth. 
1, plant, about one half natural size. 2, dorsal 
sepal, three quarters natural size. 3, petal, three 
quarters natural size. 4, lateral sepal, three quar- 
ters natural size. 5, lip, three quarters natural size. 
6, column from side, three quarters natural size. 
Drawn by Ev.mer W. Siri 
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