Explanation of PL X. 



Bvlbophyllum melanofjlossum HAYATA. 



Fig. 1. The plant. 



2. A flower (lateral sepals are artificially expanded). 



3. The same, seen from side. 



4. A dorsal sepal. 



5. A lateral sepal. 



6. A petal. 



7. A column. 



8. The same, seen from back. 



9. 10. 11. 12. A lip, seen from different sides. 



