330 CLASS XIX. ORDER It. 



Leaves numerous, linear, obtuse, with a small point, very rougli 

 and rigid, upright, but reflexed as the plant grows old, without 

 nerves or dots. Peduncles few, near the top, alternate, short, 

 furnished with small leaves, one flowered. Flowers purple.— 

 Woods and dry hills. — August, September. — Perennial. 



Aster siibulatus ? Mx. Annual Sea Aster. 



Smooth ; stem fistulous, panicled ; leaves linear, 

 tlie upper ones subulate; calyx cylindrical; ray 

 minute. 



Stem about two feet high, smooth, fleshy, somewhat reddish. 

 Leaves linear-lanceolate, somewhat clasping, smooth, with a 

 very little roughness at the edge. Branches very numerous and 

 much divided, a small one frequently issuing between a leaf and 

 the main branch in its axil. Flowers numerous. Calyx cylin- 

 drical, its scales long, acute, appressed. Ray very short, bluish 

 white. Disc yellow. — Salt marshes. — September. 



This plant may possibly be different from the A. subulatus of 

 Michaux, whose description is imperfect. The name, however, 

 is retained by our other botanists. Mr. Nuttall properly notices 

 its affinity to Conyza. 



Aster salicifolius. Ait. Willow leaved Aster. 



Leaves linear-lanceolate, entire, glabrous; calyxes 

 imbricated, lax ; stem smooth. Ait 



A very tall, slender species. Stem five feet high, smooth, 

 somewhat flexuous. Leaves long, linear, acute, entire, sessile, 

 smooth, with a rough edge. Branches alternate, slender, smooth 

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

 turnpike, Cambridge. — September. — Perennial. 



Aster cyaneus. C. 3It/Jd. Blue flowered Aster^ 



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

 rate; stem panicled, glabrous; scales of the calyx 

 lanceolate, closely imbricate. Willd. sub. syn. 



Sijj). Aster amplexicaulis. Willd. 



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

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



