Explanation of PI. IX. 



Euphorbia tarokoensis HAYATA. 



Fig. 1. The plant. 



2, 3. Floral leaves. 



4. An involucrum. 



5. The same, seen from a different side. 



6. The same, expanded. 



7. A portion of the same. 



8. A bract in the involucrum. 



9. 10. Male flowers. 



11. A young fruit. 



12. Section of the same. 



