PLATE 1 20 



Powdered White Daisies {Chrysanthemum leucanthemum, L.) 



I and 2. Scale tissue. 3, 5 and 13. Papillse of petals. 4. Scale tissue. 

 6. Lobe of ray petal. 7. Filament tissue. 8. Pollen. 9. Papillae of stigma. 

 10. Palisade cells of achene. li. Resin masses. 12. Parenchyma of recep- 

 tacle. 14. Lobe of dish petal. 



