Explanation of PI. XIX. 



Nervilia purpurea (HAY ATA). 



Fig. 1. The plant with a leaf. 



2. A portion of a leaf, showing lamellate hairs. 



3. The plant with a scape. 



4. Another scape. 



5. A lip. 



6. A column, seen from side. 



7. Apical portion of the same, anther lifted. 



8. A column, seen from back. 



9. An ovaiy. 



