ADVENTITIOUS LEAVES. 163 
For other illustrations of increased leaf-formation, 
see Multipheation of foliar organs. 
Production of leaves on a usually leafless inflorescence——'l'he 
development of the bracts of an inflorescence to such 
an extent that they resemble ordinary leaves is else- 
where alluded to as of common occurrence. It happens 
far less frequently that leaves are developed on an in- 
florescence usually destitute of them, without any 
metamorphosis or substitution, and without any forma- 


Fie. 77.—Leontodon. Scape with two leaves; the bracts of the invo- 
lucre are.also leafy. 
