Diffusely branched, slender, ±hairy annual 1-3 dm, with no well defined central axis; lvs narrowly linear, to 4 cm נ2 mm, the uppermost reduced to mere bracts; heads numerous, much like those of no. 1, often covering the broad, much branched summit of the plant; invol 3-4 mm, the outer bracts short-hairy, the inner glabrous; rays minute, purplish, about equaling or slightly exceeding the pappus; 2n=18. A weed in waste places, especially in sandy soil or along streams; O. and s. Ont. to Minn., s. to Ala. and Tex. Summer and fall. (Erigeron divaricatus; Leptilon d.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
All of my specimens of this species but two were found in dry soil in pasture fields. It is avoided by grazing animals and for this reason may be detected in a field at a long distance. It prefers a sandy or prairie habitat. In Indiana there are no reports east of the counties shown on the map. My opinion is that this plant has been introduced into northern Indiana within the past 25 years.