EXPLANATION OF THE ILLUSTRATION 
Pratre XLVIII. Buesterva pusttia C. Schweinfurth. 
1, plants, two thirds natural size. 2, flower-bud, 
from side, eight times natural size. 3, flower, par- 
tially expanded, from side, six times natural size. 
4, petal, six times natural size. 5, lip, expanded, 
twelve times natural size. 6, anther with pollinia, 
from below, twenty times natural size. 
Drawn by Ermer W, Siri 
