16 KEY TO THE FAMILIES 



Stamens distinct. 



Flowers liermaphrodibe, surrounded by a cup-lil£e in; 



volucel ; anthers versatile. 132. Dipsaceae 225 



Flowers unisexual, not involucellate; anthers basifixed. 



133. Amerosiaceae 223 

 Stamens united by the anthers, or if distinct (in Kuhnia) 



the flowers hermaphrodite and anthers basiflxed. 



134. Caeduaceae 224 

 Flowers all with ligulate corollas. 13.'). Cichoriaceab 273 



