428 Helenieae 



peduncles. Involucre campanulate, its bracts usually 

 in 1 .series, distinct, usually carinate below. Ray-flowers 

 few or many, often short. Achenes clavate, linear or 

 linear-cuneiform. Pappus of- few awns or palese or both 

 or rarely none. 



* Leaves entire. 



1. B. chrysostoma F. & M. Stems slender, freely branching, 

 2 dm. high or less, hirsute-pubescent; leaves narrowly linear, 

 entire; heads 6-8 mm. high; bracts of the involucre 7-12; rays 

 7-12, 6-8 mm. long; achenes clavate-linear, slightly contracted at 

 the summit, glabrous; pappus none. 



Rather common in open places in our coast valleys and foothills. Port 

 Ballona; Santa Monica Mountains. April-May. 



2. B. gracilis (DC.) Gray. Closely resembling the last; stems 

 slender, usually about 1 dm. high ; leaves narrowly linear ; bracts 

 and rays 10-12 or sometimes less; rays 4-6 mm. long; achenes 

 linear-cuneate, broad at the summit, commonly canescent ; pap- 

 pus of white, lanceolate or ovate, slender, awned palese or the 

 palese sometimes almost obsolete. 



Common on dry hillsides throughout our range. April-May. 



** Leaves dissected. 



3. B. affinis (Nutt.) Gray. Erect, sparingly branched, 10-15 

 cm. high, minutely pubescent, obscurely or not at all glandular; 

 leaves with filiform divisions; rays 6-8, oblong, short ; involucral 

 bracts ovate-oval; pappus of 8-10 oblong or lanceolate palese 

 with laciniate-setulose margins, fully equaling the corolla-tube, 

 some or most of them produced into an awn almost equaling the 

 disk-flowers, or in the rays blunt and awnless. 



Occasional in dry sandy places in our interior valleys. Chatsworth Park; 

 "Verdugo Hills; Arroyo Seco. 



4. B. tenella (Nutt.) Gray. Closely resembling the last and 

 associated with it, but pappus of 6-10 short and firm quadrate or 

 broadly cuneate palese with the truncate muticous summit den- 

 ticulate or nearly entire, not surpassing the tube of the corolla. 



Sycamore Grove, Greata. 



5. B. mutica (Nutt.) Gray. Stems slender, erect, branching, 

 1-2 dm. high, glandular-pubescent; rays 10-15, elongated-oblong; 



