COMPOSIT.B. 



189 



5. A. UNDULa'tus. Alt. A. diversifolius. Muh. 



Stem paniculate, hispid ; branches secund, leafy, 1-flowered ; Venues oblong- 

 cordate, amplexicaul, very entire, hairy, somewhat undulate or crenate-serrate, 

 lower ones ovate, cordate, subserrate, with winged petioles. Native of dry 

 woods. Plant rough, about 2 feet high, with slender branches. Lower leaves 

 on long winged petioles, cordate-acuminate, upper ones becoming narrow- 

 ovate and clasping. Flowers pale blue, solitary, forming a loose panicle of 

 somewhat one-sided racemes. Aug. Sept. Wavy Jlster. 



§ § Leaves lanceolate and ovate, the lower conspicuously serrate. 

 * Heads corymbose. 



6. A. Ra'dula, 



Stem erect, simple below, angular ; leaves lanceolate, acuminate, narrowed 

 towards the base, sessile, serrate, rugose and rough ; involucre imbricate vyith 

 appressed scales spreading with green tips. Moist groves and hedges. Hight 

 1 — 3 feet. Distinguished for its stiff, narrow, sharply-serrate leaves which 

 abundantly clothelhe straight, smooth stem. Branches nearly naked, undi- 

 vided, each having a single large head, rarely more. Rays numerous, short, 

 white or purplish." The lower leaves are sometimes ovate-lanceolate. Aug. 

 September. Rasp-leaved Aster. 



7. A. specta'bilis. 



Stem erect , leaves somewhat scabrous, oblong-lanceolate, sessile, entire, 

 lower ones serrate in the middle ; branches corymbose ; heads hemispherical, 

 with numerous, squarrosespreading, ciliate scales. A low Aster of pine bar- 

 rens, Ms. Stem straight, 1—2 feet high, branching above into a nearly sim- 

 ple corymb of 10 — 15 heads, which are large and showy, with many long, blue 

 rays. Sept.— Nov. Hhowij Aster. 



8. A. longifo'lius. Lam. A. laevigatus. P. 



Glabrous ; stem very branching, branches many-flowered ; leaves subam- 

 plexicaul, linear-lanceolate, lower ones serrate, smooth ; involucre scales lax, 

 lanceolate, nearly equalling the disk. Fields and thickets. Stem 3 feet high. 

 Leaves pale below, shining above, smooth both sides, the lower ones 4 — 6 

 inches long. Heads numerous, showy, with 25—30 light blue rays. Nov. 



9. A. acumina'tus. 



Stem simple, flexuous, angular, branching into a corymbose panicle above ; 

 leaves broad-lanceolate, narrowed and entire at the base, serrate and acumi- 

 nate ; involucre scales lax, linear. Grows in mountains and woods. Stem a 

 foot high, rough, downy. Leaves large, unequally and remotely seriate above, 

 and en'ding in a long, acuminate point. Panicle corymbose, terminal, few- 

 flowered, nearly or quite naked. The leaves are mostly situated just below 

 the corymb. Heads rather large, with about 15 long, white rays. Aug. 



Acuminate Aster. 



10. A. Chine'NSIS. — Leaves ovate, coarsely dentate, petiolate, cauline 

 ones sessile, cuneate at base; s/c/ra hispid; trawf/ies with single flowers. The 

 common China Aster is said to be originally from China. Stem about 18 

 inches high, with long branches, each terminated by a single flower. The 

 flower is the largest of any of the Asters, having been much improved by cul- 

 tivation. Disk yellow. Rays dark-purple. There are varieties with white, 

 blue and red flowers of various shades, also of double and semi-double. An- 

 other has very short rays of various colors. July — Sept. China Aster. 



