EXPLANATION OF THE ILLUSTRATION 
Prare I. Eprpenprum Howarpu Ames & Correll. 
1, plant, one half natural size. 2, flower, front 
view, natural size. 3, flower, side view, natural 
size. 4, lip, spread out, twice natural size. 5, col- 
umn, side view, twice natural size. 
[4] 
