& 物 tt 
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(3) 

ーー 一 Coren ー 

flower-head in bud; 5, vertical section of young flower-head ; 6, vertical section of older flower-head; 7, 

vertical section of disk-floret; 8, upper portion of marginal floret cut vertically showing the sterile 
anthers; 9, lower portion of the same also cut vertically er anthers; I1, upper portion of pappus-hair; 
12, outer bract of involucre; 13, inner bract of involucre; 14, floral diagram; 15, achene with pappus; 
16, transverse section of achene; 17, embryo; 18, receptacle with bracts of involucre reflexed :—all except 1 
and 2 enlarged. 


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