EXPLANATION OF THE ILLUSTRATION 
Pirate XXXV. Dioruonea exasperRata C.Schwein- 
Jurth, 1, plants, one half natural size. 2, flower ex- 
panded (without lip), twice natural size. 3, col- 
umn and lip from side, one and one half times 
natural size. 4, lip expanded, one and three fourths 
times natural size. 5, flower from side, one and 
one half times natural size. 
Drawn by Dororuy H. Marsu 
