ASTKKACKAK 





1. Flowers in an oblong prickly head 



2. Flowers in a Rat bead, without pricklei 





<;r. dipsakos, 



leaves I ; flowers bluis 



Scabu »sa 



scabies. Itch, from I 



1. Flowers pui pie, red i r white 

 :. Flowers ligl 





Asteraceae — Aster Family 

 Herbs with flowers in dense involu 

 etc., or wanting, petals 5, stamens . ; or 0, united by their antl 

 2-cleft, stigmas 2; flower syncarpous, sympetalous, regulai 

 head may be all tube-shaped, or the outer row or so r> 



shaped. The receptacle is rial or re or less conical, 



bearing -rales among the flowers. The head is surrounded bj I 



Key to the Genera 

 1. Flowers tube-shaped, no ray or ribbon-like ll"-. 







a. I lowers bright coloi 

 ( 1) Leaves or involui n 



(a) Leaves spiny 



x. Pappus of plumj bi 



I x i [nvolucral scales thick ai 

 j | [nvolu ral Males not thii 

 y. Pappus ■ 



(b) Involucre spiny with hooked * 

 2 ; Leaf and involui re without sj 



(a) Heads in long spikes 





