KEY TO PLATE V 



, L.) 



a, Ray or liQlate flore, Disk or 

 tubular floret?q^>A.chtt^ d, Plant, 

 Rowing rosette o^MJj^Tneaves, and 

 .fibrous roots below, frjuV 3 scapes bearing 



4. Knapweed (Cent&rea nigra, L.) 



a, i.i^nijitf floret .-^*:^ComDlete floret, 



, Fringeo\ 



d, Achene,^y(Utopus. e/RM&t leaf - 

 Upper ri'ortion : planttf with flower 

 h^ads in (Jifferent s^iges ari^ stem-]&ve 



rysuntiiettrani 

 a, Ray"7$r ligulat 



