378 AUTUMN FLOWERS AND FHUTTS. 



(30) Aster. 



A. Tripolium: stem 1-2 feet high, erect, hollow, leafy, 

 many-flowered, smooth corymbose; leaves linear-lanceolate, 

 fleshy, smooth ; flower-heads large, with a yellow disk, and 

 bright blue rays, the rays often wanting. Muddy salt marshes. 

 Fl. August, September. 



(31) Chrysocoma. 



C. Linosyris : stem smooth, |-1 foot high ; leaves numer- 

 ous, narrow- linear, entire; flower-heads yellow, in compact 

 terminal corymbs. Rocky cliffs, on the south and west 

 coasts. Fl. August, September. 



(32) Inula. 



I. Helenium : stem 3-4 feet high, round, furrowed, solid, 

 leafy, branched above ; leaves unequally dentate, downy be- 

 neath, cordate-ovate, acute, clasping, the root-leaves stalked 

 elliptic-oblong; heads few together or solitary, terminal, 

 very large, the florets bright yellow. Elecampane. Moist 

 pastures. Fl. July to September. 



I. Conyza : stem 1-2 feet high, leafy ; leaves ovate-lanceo- 

 late, downy, denticulate, the lower ones narrowed into a 

 footstalk ; heads corymbose, the florets yellow, those of the 

 circumference between tubular and ligulate, with a short ligule 

 on the inner side. Plowman's Spikenard. Calcareous soils. 

 Fl. July to September. 



(33) Pnlicaria. 



P. vulgaris : annual; stem 6-12 inches high, leafy, much 

 branched, downy ; leaves lanceolate, wavy, narrow at the 



