below, with a flattened ridge or callus at the base within. Column 
white, semi-terete, wingless. Auther-case hemispherical. Podlen- 
masses in two unequal pairs on a broad white stalk. 
Fig. 1. Flower, with the calyx removed,—the lip forced back, 2 and 3. Pollen- 
masses. 4. Portion of a leaf: -—magnified. 
