io6 Compositae 



Subtribe i. Anthemidinae. Floral-bracts present. 



Ray-flowers with oblong ligules. Fruit not much 

 compressed. Anthemis. 



Ray-flowers with short, broad ligule. Fruit much 

 compressed. Achillea. 



Ray-flowers absent. Corolla compressed, with corky 

 appendages. Diotis. 



Subtribe 2. Chrysanthemi?iae. Floral-bracts absent. 



Ray-flowers ligulate. Involucral-bracts i-2-seriate, 

 all equal. Matricaria. 



Ray-flowers ligulate. Involucral-bracts many-seriate, 

 outer shorter. Chrysanthemum. 



Flowers all tubular, 4-merous. *Cotula. 



Flowers all tubular, 5-merous. Axis of head broad. 



Tanacetum. 



Flowers all tubular, 5-merous. Axis of head narrow. 



Artemisia. 



Tribe 6. Seiiecioneae. Leaves spiral. Involucral- 

 bracts usually I -seriate, without scarious margin. Flowers 

 usually all yellow. Floral-bracts absent. A rithers usually 

 obtuse at base. Style-arms various. Pappus usually of 

 copious, soft hairs. 



* Leaves often very large, produced after the flowers. 

 Style-arms of disc-flowers connate. 



Heads in racemes, purple or white, outer flowers 

 tubular. Petasites. 



Heads solitary, yellow, outer flowers ligulate. 



Tussilago. 



** Leaves radical and cauline. Style-arms of disc- 

 flowers separate, truncate. 



Perennial herbs. Involucral-bracts in several series 

 all equal. *Doronicum. 



