Explanation of PI. VIII, 



Dendrdbium longicalcaratum HAYATA. 



Fig. 1. The plant. 



2. A flower, seen from face, lip taken aside. 



3. The same, seen from back. 



4. The same, seen from front, spur partially taken off to show 



the column and mentum. 



5. A dorsal sepal. 



6. A lateral sepal detached from the mentum. 



7. A petal. 



8. A lip, seen from within. 



9. A portion between the claw and lamina of the lip, seen from back. 



10. Column, seen from side. 



11. The same, seen from back. 



12. The same, in section, seen from side. 



13. The same, seen from back. 



14. An anther with a gland. 



. 15. The same, seen from back, pollinia taken off. 



16. The same, with pollinia. 



17. Pollinia. 



18. The same, seen from below. 



