pilionaceous flower, four or five times as large as the dorsal 
one: colour brownish-green, spotted. Peta/s smaller even than 
the dorsal sepal, purplish, from a broad base, acuminate. Lip 
springing from the decurrent base of the column, and jointed 
upon it, recurved, three-lobed ; lateral lobes small; intermediate 
one tongue-shaped, entire, furrowed down the middle. Column 
short, winged on each side, which wings terminate above in an 
acuminated point on each side the anther-case. 
Fig. 1. Entire flower. 2. Flower from which the sepals and petals are re- 
moved, showing the column and the lip. 3. Pollen-masses magnified. 
