three-lobed, unguiculate, side-lobes very small, ovate, intermedi- — 
ate ones very broad arrow-shaped, white (the disc red), with the | 
two side-wings falcate, the apex suddenly acuminate, the margin 
a little crisped ; on the disc are several long, sharp tubercles or 
fleshy projections. Column with two, broad, blunt wings, one — 
on each side : anther-case hemispherical. | 
Fig. 1. Column and lip. 2. Pollen-masses. 
