Explanation of PI. XII. 



Er'ia (ir/sancnsis HAY ATA. 



Fig. 1- Tlie plant. 



2. A flower. 



8. The same, seen from side. 



4. The same, seen from back. 



5. The same, seen from face, lip taken off. 



6. A lip. 



7. The same, medially cut. 



8. Apical portion of a column. 



9. The same, seen from side. 

 10. The same, in section. 



