Explanation of PL VI. 



Chrysanthemum arisanense HAY AT A. 



Fig. 1. The plant, 



2. A leaf. 



3. An outer involucral bract. 



4. An inner involucral bract. 



5. A marginal flower. 



O 



6. Apical portion of the style. 



7. Basal portion of the same style with the achenc. 



8. A disc-flower. 



9. The same, corolla and stamens token oft'. 



10. Corolla expanded and stamens. 



11. Stamens expanded. 



12. An embryo. 



13. The same, one of the cotyledons taken off. 



