out the flowers, this plant, standing by the side of D. speciosum 
in our stove, may be at once recognized as distinct, by the 
greater length of the pseudobulbs or stems and of the leaves. 
Our flowering racemes are still more distinct, in the dense mass 
of flowers of D. Hillii on the very large and very drooping ra- 
cemes, and by the longer and more tapering sepals, together 
with the long, narrow, linear petals. | | 
Fig. 1. Flower, front view. 2. Column and lip. 8. Front view of the lip. 
4 and 5, Pollen-masses :—all more or less magnified, 
