52 The Ohio Journal of Science [Vol. XVIII, No. 2, 



or with slightly spreading tips. Pappus white. Achenes 

 sHghtly pubescent. In dry or moist soil. August to October. 

 Rather general. 



20. Aster hirsuticaulis Lindl. Rough-stem Aster. Stem 

 slender, erect, 1^-3 ft. high, pubescent nearly to the base. 

 Leaves thin, glabrous above, usually pubescent on the midvein 

 beneath, serrate, with a few appressed teeth, or entire, Hnear- 

 lanceolate to lanceolate, often G in. long, \-\ in. wide, the 

 sessile or basal ones spatulate and petioled. Heads more or 

 less unilateral on the branches, densely or loosely clustered or 

 sometimes few in the axils of the leaves; rays white; bracts 

 of the involucre linear-lanceolate, acute or acuminate, imbri- 

 cated in 3-4 series. In woods and thickets. August to 

 October. Warren, Auglaize. 



21. Aster vimineus Lam. Small White Aster. Slender 

 bushy plants, divergently branched above, 2-5 ft. high. Stem 

 leaves linear-lanceolate, entire or with a few fine sharp teeth 

 in the middle, 3-5 in. long, \-\ in. wide, acuminate at the apex, 

 narrowed to a sessile base; leaves of the branchlets much smaller. 

 Heads very numerous, small, usually densely racemose-secund 

 and short pedicled; rays numerous, white to purphsh; bracts 

 of the broadly turbinate involucre linear, acute, green-tipped, 

 imbricated in 3 or 4 series. Pappus white. In moist soil. 

 August to September. Wayne County. 



22. Aster multiflorus Ait. Dense-flowered Aster. A much 

 branched, bushy plant, rough pubescent or scabrous, 1-7 ft. 

 high. Leaves rigid, sessile or slightly clasping, rough, ciliate; 

 those of the stem \ to 1^ in. long; those of the branches very 

 small and crowded. Heads densely crowded, nearly sessile and 

 often sHghtly secund on the branches; rays 10-20, white; 

 involucral bracts coriaceous, ciliate or pubescent, imbricated in 

 3 or 4 series, with green obtuse or mucronate spreading tips. 

 Pappus brownish. Achenes puberulent. In dry open places. 

 August-November. Lucas, Erie, Gallia. 



23. Aster dumosus L. Bushy Aster. Glabrous or nearly 

 so throughout, rather stiff and viscid, usually paniculately 

 branched, 1-3 ft. high. Leaves firm; the basal ones spatulate, 

 dentate; those of the stem, linear to linear-lanceolate, entire, 

 acute or obtuse, 1-3 in. long, \-\ in. wide, roughish margined, 

 often reflexed, those of the branches very numerous, small and 

 bract-Hke. Heads terminating the minutely leafy branches 



