(96) 



4. H. Calif ORNicus DC. Keceptacle 

 convex; paleae of receptacle blunt, not aris- 

 tate; disc-flowers yellow, only their anthers 

 brown. — U- Berkeley hills. San Eafael. Sum- 

 mer. 



b. Palece deciduous. 



29. Pugiopappus Gray. 



Superflua. Head oo-flowered. Ray-flowers 

 broad, deeply crenate. Involucre 2-seriate. 

 Pappus of the disc 0; of the ray 2-aristate. 

 Flowers yellow. Leaves alternate. — 0. 



1. P. CALLIOPSIDEUS Gray. — Alma. Sum- 

 mer. 



30. LeptosyneDC. 



Superflua. Head oo-flowered. Ray -flowers 

 broad, deeply crenate. Involucre 2-seriate, 

 Pappus 0. Flowers yellow. — 0. 



1. L. Stillmani Gray. — Alma. Summer. 



31. Bidens L. Beggar-Ticks. 



Frustranea. iEqualis. Head co-flowered. 

 Involucre 2-seriate. Pappus 2-4-aristate. 

 Leaves opposite. 



1. B. CHRYSANTHEMOIDES Michx. Flowers yel- 

 low. — . Swamps near San Francisco (extinct) 

 Marin count3^ Summer. 



