Explanation of PL XVII. 



Sanguisoria formosana Hayata. 



Fig. 1. The plant. 



2. A leaf. 



3. A leaflet. 



4. A flower-head. 



5. A flower. 



6. A bract. 



7. A sepal. 



8. A flower, stamens taken off. 



9. 10. 11. Stamens, seen from different sides. 

 12. Cross section of an ovary. 



