Dec, 1917] The AsterecB of Ohio 49 



thin, slightly glabrous or roughened above, glabrous or pubescent 

 below, the lower and basal ones cordate or sagittate, ovate, 

 lanceolate, sharply serrate, acuminate, 3-6 in. long, on slender 

 naked or narrowly margined petioles; the upper lanceolate, 

 sessile or on short margined petioles, serrate or entire; 

 inflorescence leaves very small. Heads crowded and racemose; 

 rays 10-15, light blue or purplish; bracts more or less glabrous 

 with slightly spreading green tips. Pappus whitish. In dry 

 soil. August to October. Rather general. 



10. Aster undulatus L. Wavy-leaf Aster. Plants with 

 stiff, rough, pubescent stems, divergent above, 1-3^ ft. high. 

 Leaves rough on both sides, pubescent beneath, dentate, 

 undulate or entire, acute to acuminate, the lower and basal 

 ones ovate, cordate, 2-0 in. long, on margined petioles; the 

 middle ones ovate-lanceolate or oblong, with margined petioles 

 dilated and clasping at the base; the upper sessile and clasping; 

 those of inflorescence small and bract-like. Heads numerous 

 and racemose, often secund on spreading branches; rays 8-15, 

 pale blue to violet; bracts of the broadly turbinate involucre 

 linear, oblong, pubescent, acute or acutish with appressed green 

 tips. Pappus whitish. In dry soil. September to October. 

 Wayne County. 



11. Aster patens Ait. Late Purple Aster. Slender, rough, 

 divergently branched plants, 1-3 ft. high. Leaves ovate- 

 oblong to oblong-lanceolate, rough and somewhat rigid, strongly 

 cordate or auriculate-clasping at the broad base, entire, acute, 

 or the lowest obtuse, 1-3 in. long, those of the branches smaller 

 and bract-like, the margins rough-ciliate. Heads 1 in. or more 

 broad, solitary at the ends of the branches; rays 20-30, purplish 

 or deep violet ; bracts of the broadly turbinate involucre linear- 

 oblong, finely pubescent and somewhat glandular, imbricated 

 in several series, with spreading, green, acute tips. Pappus 

 tawny. Achenes pubescent. In dry open places. August to 

 October. Portage County. 



12. Aster phlogifolius Muhl. Thinleaf Purple Aster. Plants 

 resembling Aster patens Ait, but usuall}^ taller. Leaves larger, 

 lanceolate to oblong-lanceolate, thin or membranous, acuminate 

 at the apex, auriculate-clasping at the base, roughish above, 

 pubescent beneath, usually narrowed below the middle, often 

 6 in. long. Heads usually numerous, 1-2 in. broad, panicled 

 or racemose on the branches of the inflorescence; rays numerous. 



