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



high. Basal leaves oblong to spatulate, obtuse, dentate or 

 entire; stem leaves lanceolate to linear-lanceolate, acute or 

 acuminate at the apex, narrowed to a sessile base or a margined 

 petiole, mostly entire, 2-5 in. long, |-f in. wide, those of the 

 branches gradually smaller. Heads rather few; rays numerous, 

 bright white or rarely purplish; bracts of the hemispherical 

 involucre linear-lanceolate, acute, green-tipped, imbricated 

 in about 3 series, the outer shorter. Pappus white. Achenes 

 minutely pubescent. On moist cliffs. August-September. Vinton 

 County. 



28. Aster ericoides L. White Heath Aster. Usually bushy 

 paniculately branched plants with glabrous or hirsute stems, 

 branchlets often secund. Leaves firm; the basal ones spatulate, 

 obtuse, dentate, narrowed to margined petioles, glabrous or 

 ciliate; stem leaves linear to linear lanceolate, acute entire, 

 1-3 in. long, \-\ in. wide; those of the branches bractlike and 

 numerous. Heads very numerous; rays 15-25, white or tinged 

 with rose, bracts of the campanulate or hemispherical involucre 

 coriaceous, lanceolate, abruptly acute, green-tipped, imbricated 

 in about 3 series. Pappus white. Achenes finely pubescent. 

 In dry soil. September to December. General. 



var. Aster ericoides platyphyllus, T. & G. A broad-leaved 

 densely villous relative of Aster ericoides found in the western 

 half of the state, east to Erie, Franklin and Meigs Counties. 



29. Aster ptarmicoides (Nees.) T. & G. Upland White 

 Aster. Slender tufted plants with rigid corymbosely branched 

 stems, usually rough above, 1-2 ft. high. Leaves linear-lanceo- 

 late, 1-3 nerved, entire or with a few distant teeth, firm, shining, 

 rough margined, acute, narrowed to a sessile base, or the lower 

 petioled; the lower leaves 3-6 in. long, \-\ in. wide; the upper 

 smaller and bract-like, f-1 in. broad; rays 10-20, white, bracts 

 of the involucre linear oblong, obtuse, the outer acutish, 

 appressed, nearly glabrous, green, imbricated in about 4 series. 

 Pappus white. Achenes glabrous. In dry or rocky soil. July 

 to September. (Ottawa County — Moseley Herbarium). 



Erigeron L. Fleabane. 

 Branching or scapose herbs with alternate or basal leaves. 

 Heads solitary or in a naked corymbose pedunculate inflores- 

 cence, some species with nodding tips. Involucre hemi- 

 spherical, cylindrical or campanulate, of narrow equal bracts 

 imbricated in several series; ray flowers white or pink, bispor- 



