COMPOSITAE (COMPOSITE FAMILY) 431 



of the involucre nearly equal, green, linear, spreading, very soft 

 and lax, glandular hairy. Achenes bristly-hairy, with a thick 

 tuft of tawny, brown pappus about three times their length. 



Means of control 



Close and repeated cutting for the purpose of starving the 

 perennial roots and preventing seed development. The plant is 

 at once destroyed by cultivation of the ground. 



HEART-LEAVED ASTER 

 Aster cordifdlius, L. 



Native. Perennial. Propagates by seeds. 



Time of bloom: August to October. 



Seed-time: September to November. 



Range: New Brunswick to Minnesota, southward to Georgia and 



Missouri. 

 Habitat: Woodland borders, fields, and roadsides, fence rows, and 



thickets. 



Stem one to four feet tall, erect, slender, round, and smooth. 

 Leaves thin, finely rough, hairy, sharply toothed, heart-shaped to 

 broadly ovate, long-pointed, the lower ones often five or six inches 

 long and nearly as broad, with slender petioles ; the upper ones 

 much smaller, ovate to lance-shaped, short-petioled or sessile. 

 Heads very numerous, in profuse panicled clusters at the ends of 

 stem and branches, each about a half-inch broad, the rays light 

 violet-blue ; involucre top-shaped, its bracts appressed and tipped 

 with short, obtuse, green points. Achenes very small, with whitish 

 pappus. 



Means of control the same as for New England Aster. 



SMOOTH ASTER 



Aster laevis, L. 



Native. Perennial. Propagates by seeds. 



Time of bloom: August to October. 



Seed-time: September to November. 



Range : Maine and Ontario to North Dakota, southward to Georgia, 



Louisiana, and Kansas. 

 Habitat : Dry or stony soil ; fields, pastures, roadsides. 



