310 Class XIX. Order II. 



Flowers on short stalks, blue. Found in the woods on Concord 



turnpike, Cambridge. September. Perennial. 



ASTER CYANEUS. C. Muhl. Blue flowered sister. 



Leaves ovate-oblong, acute, clasping, cordate, ser- 

 rate ; stein panicled, glabrous ; scales of the calyx lan- 

 ceolate, closely imbricate. Willd. sub. syn. 



Syn. JlSTER AMPLEX1CAULIS. Willd. 



This is one of the most common and beautiful species. Stem 

 erect, perfectly smooth. Leaves oblong, tapering to an acute 

 point, smooth, and even, with a rough edge, slightly serrate 

 about the middle, clasping, the lower ones contracted at base. 

 Branches of the panicle furnished with a few small leafets. 

 Flowers on distinct peduncles, purplish blue. Borders of woods 

 and fields. August. Perennial. 



ASTER UMBELLATUS. Ait. Umbelled Aster. 



Leaves lanceolate, entire, narrowed at base, acumi- 

 nate, rough on the margin ; stem simple, corymbed at 

 top ; calyx scales lanceolate, lax. Willd. 



Syn. ASTER JlMrGDALiNus. Mich. 



A very tall, erect species, with white flowers. Stem four or 

 five feet high, furrowed, smooth, sometimes rough at top, leafy. 

 Leaves numerous, large, lanceolate, rough at the edge, paler 

 underneath. Stem branching at top into a large, compound, flat 

 topped corymb. Calyx scales lanceolate, obtuse. Ray of a mid- 

 dle size, white. In low grounds. August, September. Peren- 

 nial. 

 ASTER NOV;E ANGLIJE. L. Neiv England Aster. 



Leaves lanceolate, clasping, entire, appendaged at 

 base ; stem hairy, straight ; flowers terminal, crowded ; 

 calyx scales loose, coloured, lanceolate, longer than the 

 disc. Willd. 



A tall, and very beautiful plant. Stem three feet high, brown, 

 very hairy. Leaves very numerous, linear-lanceolate, entire, 

 acute, continued at base into a pair of small, rounded lobes, 

 clasping the stem. Flowers large, on short stalks, crowded at 



