COMPOSITE. 



191 



16. A. prenanthoi'des. Muh. 



Stem hairy or pubescent above, corymbose-paniculate ; leaves oval-lanceo- 

 late, serrate, acuminate, attenuate at base into a long winged petiole which is 

 auriculate at the insertion ; involucre imbricated with several rows of linear, 

 green-tipped, spreading scales. Grows in low woods, N. Y. Stem 2 — 3 feet 

 high with a terminal corymbose panicle of large heads on short peduncles. 

 Rays showy, pale blue. Leaves remarkable for the long, winged petiole, 

 which is dilated at its base into rounded, auriculate segments. Branch-leaves 

 Bmaller, nearly entire. Sept. — Nov. 



§ § § Leaves entire (the lowest rarely subserrate). ^ Heads corymbose. 



17. A. elo'des. T. 8^ G. 



Glabrous and very smooth ; branches corymbose-paniculate; ?caws linear- 

 lanceolate, entire, shining, thick, upper anes somewhat clasping ; involucre 

 closely imbricated in several rows of linear, green-pointed, spreading scales. 

 In Swamps. Stem 1—2 feet high, with very smooth foliage and large, showy, 

 blue flowers. Aug. Sept. Swamp Aster. 



18. A. Nov.E A'ngli^. l. 



F/o2/'c?-5 terminal, crowded, somewhat fastigiate ; ^(cjn. hispid, paniculate; 

 ieaces linear-lanceolate, ample.xicaul, auriculate at base ; scales of involucre 

 equal, la.Y, linear-lanceolate, rather longer than the disk. A large and beau- 

 tiful Aster, in fields, meadows, and shades. In Europe it is deemed worthy of 

 cultivation. Stem 4— G feet high, straight, erect, viscidly hairy, colored. 

 Leaves very numerous, narrow, entire, with 2 auricular appendages at base. 

 Flowers large, in a kind of loose paniculate corymb. Ray-flowers deep pur- 

 ple, numerolis (75—100). Sept. -^'ew England Aster. 



19. A. NEMORA'LIS. Ait. A. Iffidifolius. P. 

 Branches corymbed ; 7;crfu?ic/e5 1 -flowered, nearly naked, filiform ; involucre 



loosely imbricate, half as long as the disk, with very acute scales ; ray-fiowers 

 about 20. Leaves linear-lanceolate, tapering to the base, nerveless, revolute- 

 margined, roughish. Plant about a foot high, found in woods, common. It 

 varies in the number of heads, there being sometimes but one. The leaves 

 have sometimes a few slight indentures. Rays large, white or pale-purple. 

 Sept. Oct. Wood Aster. 



20. A. ptarmicoi'des. t. <^- G. 



Stem corymbose-fastigiate above ; leaves linear-lanceolate, acute, rough- 

 margined, entire, lower ones dentate, attenuated into a short petiole ; rays 

 short. A very distinct Aster, low and leafy, found in rocky soils, by streams, 

 &c., rare. Stems clustered, simple, each bearing a spreading panicle of heads 

 which are below the middle size and furnished with snow-white rays. July 

 Sept. Sncezewort Aster. 



21. A. FLEXUO'SUS. Nult. A. sparsiflorus. P. 



Stem branching, slender, fle.xuous, very smooth : hateslong and succulent, 

 the lower ones sublanceolate-linear, upper ones subulate ; branches leafy, 

 1-flowered ; innolncre scales lanceolate, acuminate, appressed ; rays numerous, 

 shorter than the involucre. Grows in salt marshes. The whole plant very 

 smooth, a foot high, with large, purple flowers; disk yellow. Aug.— Oct. 



Few-Jloicercd Aster, 



