Explanation of PL XXII. 



Habenaria yoodyeroides DON. \ax.formosana HAYATA. 



Fig. 1. The plant. 



2. A flower. 



3. The same, seen from side. 



4. The same, seen from back. 



5. A dorsal sepal. 



6. A lateral sepal. 



7. A petal. 



8. A lip. 



9. 10. Pollinarium, seen from different sides. 



