EXPLANATION OF THE FIGURES. 



PLATE X. 



Fig. I. Diagram of a raceme. 

 ,,2. corymb. 



3- spike. 



4. umbel ; (c~), the involucre. 

 5. head or capitulum ; (<:)) the involucre. 



6. compound umbel ; (c), involucre ; (a 1 ) (d), umbellules ; 



(') (*)i involucels ; (/), rays. 

 7- panicle. 

 8. dichotomous cyme. 

 9. helicoid 



10. scorpioid 



Throughout (a) (a) are flowers; (<5) (<5), the bracts. 

 II. Diagram of a hypogynous flower; (a), sepal; (6), petal; (c~), stamen; 



(d), ovary. 



12. and 13. Diagrams of a perigynous flower letters as before. 

 14. Diagram of an epigynous flower letters as before. 

 15. valvate aestivation. 



16. valvate induplicate 



17. involute 



18. of an imbricate 



19. contorted 



Overlap to the right. 



