72 Cluirles E. Bessey 



Family 293. Asteraceae. Asters, Calyx from bracteose to 

 capillary ; receptacle naked ; usually with rays. Medium-sized 

 plants. Aster, Solidago, Erigeron, Bellis. (Sp. 181 5.) (Pf. 



IV, 5, 142.) 



Family 294. Vernoniaceae. Ironweeds. Calyx from bracteose 

 to capillary ; receptacle naked ; without rays ; style branches his- 

 pidulous. Medium-sized plants. Vernonia. (Sp. 788.) (Pf. 

 IV, 5, 120.) 



Family 295. Eupatoriaceae. Blazing Stars. Calyx from brac- 

 teose to capillary ; receptacle naked ; without rays ; style branches 

 papillose. Medium sized plants. Lacinaria, Eupatorium. (Sp. 

 944.) (Pf. IV, 5, I3I-) 



Family 296. Anthemidaceae. Camomiles. Calyx a short 

 crown or wanting ; receptacle chaflfy or naked ; usually with white 

 ray flowers. Medium sized plants. Anthemis, Chrysanthemum, 

 Artemisia. (Sp. 915.) (Pf. IV, 5, 267.) 



Family 297. Senecionidaceae. Groundsels. Calyx capillary; 

 receptacle naked; with or without rays. Medium sized to large 

 plants. Senccio, Arnica. (Sp. 1982.) (Pf. IV, 5, 283.) 



Family 298. Carduaceae. Thistles. Calyx mostly capillary; 

 receptacle usually bristly (not chaffy) ; without rays. Mostly 

 stout plants. Carduns, Arctium, Cnicus. (Sp. 1563.) (Pf. IV, 

 5,312.) 



Family 299. Mutisiaceae. Mutisias. Calyx mostly capillary; 

 receptacle usually naked; flowers all two-lipped. Medium to 

 large (even woody) plants, of tropical or warm regions. Mii- 

 tisia, Chaptalia. (Sp. 550.) (Pf. IV, 5, 333.) 



Family 300. Lactucaceae. Lettuces. Calyx mostly capillary; 

 receptacle usually naked; flowers all strap-shaped. Small to 

 medium sized plants, mostly with a milky juice. Lactuca, 

 Hieracium, Cichorium, Taraxacum. (Sp. 1701.) (Pf. IV, 5, 

 350.) 



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