COMPOSITE. 209 



VI. ANTHEMOIDEif:. Involucral bracts scarious or with 

 scarious tips : anther cells not tailed : stylar arms trun- 

 cate : receptacle naked (or occasionally with scales). 



Heads small roundish, numerous, not rayed . . artemesia. 



English exa?nples : tanacetum Tansy ; artemesia Worm- 

 wood ; CHRYSANTHEMUM ; MATRICARIA and ANTHEMis Chamo- 

 mile ; ACHILLEA Yarrow. 



IV. INULOIDE^E. Anther cells sagittate (tailed or not): 

 stylar arms linear, or of sterile florets not separating : 

 pappus copious (all florets in our genera tubular, outer 

 very slender). 



* Bracts green, narrow. 



Anther cells tailed blumea. 



Anther cells not tailed : stem winged ..... laggera. 

 * "^ "^ Bracts scarious. 



Central florets with stamen and undivided style (sterile) ; 



bracts white or pink anaphalis. 



All or nearly all florets fertile (styles divided) : bracts yellow. 



helichrysum. 



English examples : gnaphalium, antennaria (Cudweed) 

 Everlasting; filago ; inula Elecampane; pulicaria Fleabane. 

 Madras example : vicoA. 



()8) Receptacle with scales between the florets. 



V. HELIANTHOIDEi^. Heads rayed : anther cells not 

 tailed : stylar arms truncate : achenes naked or with scales 

 (but no pappus) : receptacle with scales between the 

 florets : leaves in our genera opposite. 



•^ Disc florets sterile with undivided styles . . chrysogonum. 



* * All florets fertile. 

 Five outer involucral bracts long, sticky . . . seigesbeckia. 

 Heads flat : rays conspicuous yellow : achenes with two to four 



barbed bristles bidens. 



English examples : helianthus Sunflower ; bidens Bur- 

 marigold. 



(ii) Involucral bracts in one row all same length or a few 

 outer shorter. 



