(97) 



32, Madia Mol. TAB-WEED. 



Superflua. Necessaria. Squalls. Ray- 

 flowers ligulate, 3-dentate, scarcely longer 

 "than the involucre. Involucre 1-seriate, her- 

 baceous; scales carinate, complicate, embrac- 

 ing the ray-akenes. Receptacle naked in the 

 center, with 1-2 rows of palese between the 

 disc and the ray. Akenes laterally compressed ; 

 pappus of the ray 0; of the disc usually 0. 

 Viscid, resinous herbs. Flowers yellow. 



1. M. NUTTALLII Gray. Ray-flowers ex- 

 serted and conspicuous; paleae of the pappus 

 fimbriate. 2. Redwoods, Marin county. 

 Spring, 



2. M. RADIATA Kell. Ray-flowers ex- 

 serted and conspicuous, obtusely 3-dentate; 

 pappus 0. 0. Antioch. Spring. 



3. M. ELEGANS Don. Ray-flowers exserted 

 and conspicuous, acutely 3-lobed; pappus 0. 

 . Common. Spring and summer. 



4. M. SATIVA Mol. Ray-flowers short, 

 inconspicuous; pappus 0; akenes of the disc 4- 

 nerved,quadrangular. 0. Common. Summer. 



5. M. DISSITIFLOKA Gray. Ray- flowers 

 short, inconspicuous; pappus 0; akenes of the 

 disc without the four nerves and angles. 0, 

 Marin county. Summer. 



5 



