Explanation of PI. XV. 



x HAY ATA. 



1. The plant. 



2. A flower. 



3. A dorsal sepal and two petals forming a hood. 



4. The same, a dorsal sepal aud petals detached. 



5. A lateral sepal. 

 <>. A lip. 



7. A column, seen from side, anther a little lifted. 



8. Apical portion of a column. 



9. The same column with the basal portion of the lip. 



10. Basal portion of the same lip. 



11. The same, seen from below. 



r, = rostellum ; st, sh, s = stigma; a, an = anther; ap = columual 

 appendages ; ra, = lateral lobes of the clinaudrium ; ca= basal 

 appendages of the lip. 



