SMALLING DISEASE WITH REDUCED INVOLUCRES AND FLOWERS 



Figure 16. The distortion is less extreme than in Figure 15 and the buds develop 

 to the stage of flowering, but the leaves, bracts and flowers are notably reduced, with 

 the involucres restricted to small size and the petals often very short, as in the lower 

 flower. The leaves are narrowed and deeply lobed, with the surfaces and margins 

 uneven. Note the contrast in leaf-forms with Figure 17, and also with Figures 14 and 

 15, as showing the wide range of diversity in the abnormal growth induced by the 

 smalling disease. (Natural size.) 



