( 115 ) 



Ballast-weed. Introduced from the Mediter- 

 ranean region. Summer. 



Sub-Family 2. Ligidijiorce. 

 All flowers of the head ligulate. 



Tribe I. CiCHORiACEiE. 



63. Stephanomeria Nutt. 



Head few-flowered. Involucre 1-seriate, 

 calyculate. Eeceptacle flat, naked. Akenes 

 5-costate, with a callosity at their place of in- 

 sertion. Pappus 1-seriate, bristly, plumose, 

 white, coalescent. — 0. 



1. S. VIRGATA Benth. Flowers matutinal. 

 Common. Summer. 



64. Rafinesquia Nutt. 



Head Go-flowered. Involucre 1-seriate, 

 calyculate. Receptacle flat, naked. Akenes 

 rostrate, with a callosity at their place of in- 

 sertion; pappus white, plumose, capillary, 

 coalescent. — 0. Flowers pale. 



1. R. Californica Nutt. Common. Sum- 

 mer. 

 Tlie smell of the plant resembles that of opium. 



65. Hypochaeris L. 



Involucre imbricate. Receptacle paleaceous. 

 PaleBe deciduous. Akenes rostrate; pappus 

 plumose. Flowers yellow. 



