Sneezeweed Tribe 431 



obovate or spatulate, entire; heads short-peduncled ; bracts of 

 the involucre about 8, becoming somewhat carinate-concave, with 

 scarious margins embracing the ray-achenes ; ray-flowers short 

 and broad, yellow; achenes glabrous; palese 10, very short, obtuse. 



Dry washes in the interior valleys. La Canada; San Fernando Valley. 

 April-May. 



52. AMBLYOPAPPUS H. & A. 



Rigidly erect panicled small maritime annual with 

 gummy sweet-scented very bitter herbage, narrow entire 

 alternate leaves, and small discoid heads of yellow 

 flowers. Involucral bracts 5-6, broadly obovate, their 

 middle part becoming somewhat carinate-concave. Re- 

 ceptacle small conical. Corollas all short, tubular, those 

 of the pistillate flowers minutely 2-3-toothed, of the 

 perfect 5-toothed ; the teeth soon connivent. Achenes 

 obpyramidal, pubescent. Pappus of 8-12 oblong obtuse 

 palesB about equaling the corollas. 



1. A. pusillus H. & A. Somewhat corymbosely much branch- 

 ed, 10-25 cm. high, the lowest leaves pinnately 3-5-parted and 

 opposite, their segments narrowly linear; involucre 4 mm. high. 



Occasional on bluffs overhanging the se. Port Los Angeles ; Playa del 

 Rey. June-August. 



53. CHAENACTIS DC. 



Annual herbs, often more or less woolly, with com- 

 pound leaves and discoid heads mostly solitary and 

 peduncled. Involucre campanulate, the linear bracts 

 equal, uniserial, herbaceous. Receptacle flat, naked. 

 Corollas with short tube, long narrow throat and short 

 teeth, those of the outer row sometimes more ample 

 and resembling rays. Achenes slender, smooth. Pappus 

 of hyaline nerveless palese. 



* Corollas yellow, the outer somewhat enlarged and unequally lobed. 



1. C. lanosa DC. Stems short, branching, bearing few- 

 many long naked peduncles, 1-2 dm. high, the earlier scapiform ; 



