368 ASTERACEAE. 



nate-campanulate, 10-12 mm. broad; bracts rather broadly linear, 

 their tips usually somewhat reflexed. 



Common in sandy soil near the coast. June-August. 



2. C. virgata bernardina Abrams. Stems erect or ascending, 6-8 

 dm. high; herbage densely floccose- woolly; leaves oblanceolate or 

 oblong, serrate-toothed above; inflorescence somewhat virgate- 

 branched; heads not numerous, only the involucres and the upper- 

 most portion of the peduncles glandular; involucres turbinate- 

 campanulate, 6-8 mm. broad; bracts narrowly linear, their tips 

 somewhat recurved. 



Common on the dry plains of the interior valleys, especially in 

 the San Bernardino Valley. The type of this variety is the author's 

 no. 2931, collected at Mentone. 



16. ASTER L. 



Leafy stemmed autumnal perennial or rarely annual 

 herbs with alternate leaves and panicled or somewhat 

 corymbose heads. Involucre hemispheric to campanu- 

 late, its bracts imbricated In several series, tips herba- 

 ceous. Ray-flowers many, commonly bluish or pinkish, 

 pistillate. Disk-flowers perfect, yellow changing to red- 

 purple; corolla- tube slender; limb funnelform. Style- 

 branches flattened, their appendages subulate, lanceo- 

 late or ovate, acute. Pappus-bristles slender, numerous, 

 scabrous, usually In 1 series, dull white. 



Perennials. 



Involucral bracts closely imbricated, 

 with broad green tips. 

 Foothill and valley species, 4 dm. 

 high or more. 

 Herbage rough-pubescent. 1. A. menziesii. 



Herbage soft-pubescent. 2. A. hernardimis. ^ 



Mountain species, about 3 dm. high. 3. A.fremonti parishii. 

 Involucral bracts not closely imbricated, 

 narrowed above to a point. 

 Leaves ovate-oblong to broadly 



oblanceolate. 3. A. greatae. 



Leaves narrowly lanceolate. 4. A. hesperius. 



Annual. 5. A. exilis. 



1. A. menziesii Lindl. Strictly erect, about 4-6 dm. high, 

 usually simple and very leafy up to the mostly simply racemose or 

 racemose-paniculate inflorescence, the whole plant cinereously 

 and roughly pubescent; leaves oblong-lanceolate, acute, 5-7.5 cm. 

 long, remotely and faintly serrate; heads numerous in an arnple 

 cymose panicle; involucres nearly hemispheric, about 6 mm. high; 

 bracts in rather few series, spatulate-linear, very obtuse, wholly 

 green-herbaceous; rays dull pale purplish. 



