Dec, 1917] The Asterece of Ohio 51 



scabrous above, glabrous or nearly so beneath, .3-8 in. long, 

 f-1^ in. wide, acuminate at the apex, abruptly narrowed below 

 to a broad margined entire petiole with an auriculate clasping 

 base. Heads usually numerous, 1 in. or more broad; rays 20-30; 

 violet; bracts of the hemispherical involucre acute, green, 

 spreading, imbricated in 3-4 series, the outer shorter. Pappus 

 tawny. Achenes pubescent. August to October. In moist 

 soil. Rather general. 



17. Aster laevis L. Smooth Aster. Stem usually stout, 

 glabrous and often glaucous, 2-4 ft. high, branched or simple. 

 Leaves entire or serrate, glabrous, slightly roughened on the 

 margins, the basal and lower gradually narrowed to winged 

 ]Detioles, the upper sessile and usually clasping, lanceolate, 

 oblong-lanceolate or ovate, acute or obtusish at the apex, 

 1-4 in. long, \-2 in. wide; those of the branches small and bract- 

 like. Heads usually numerous, about 1 in. broad, in a close 

 panicle; rays 15-30, blue or violet; bracts of the campanulate 

 involucre rigid, ovate, appressed, green-tipped, imbricated in 

 several series. Pappus tawny. Achenes glabrous or nearly 

 so. Usually in dry soil. September to October. Rather 

 general. 



IS. Aster junceus Ait. Rush Aster. Very slender simple 

 or little branched herbs w4th stems glabrous or pubescent 

 above, 1-3 ft. high. Leaves firm, glabrous, roughish mar- 

 gined, entire, or with a few distinct teeth, acute to acuminate 

 at the apex, sessile by a broad clasping or slightly cordate base, 

 3-6 in. long, \-\ in. wide. Pleads about 1 in. broad, rather 

 distant, paniculate; rays violet to white; involucre hemispherical, 

 its bracts glabrous, linear, very acute, imbricated in 3-4 series, 

 the outer shorter. Pappus pale. In swamps and bogs. July- 

 September. Licking. Wayne. 



19. Aster lateriflorus (L.) Britt. Starved Aster. Stem 

 pubescent or nearly glabrous, slender, divergently branched, 

 1-5 ft. high. Basal leaves ovate, slender petioled; stem leaves 

 broadly lanceolate, or oblong lanceolate, acuminate, serrate, 

 2-5 in. long, ^-1 in. wide; leaves of the branches smaller, 

 oblong to linear-oblong. Heads \~\ in. broad, usually numer- 

 ous, crowded short pedicled or sessile, arranged on the branches 

 in onesided racemes; rays numerous, short, white or pale; disk 

 flowers purple; bracts of the turbinate involucre obtuse to 

 acutish, imbricated in about 4 series, with short, green, appressed 



