This species is found in dry or moist sandy soil and seems to prefer a prairie habitat. It is local to very local in the area shown on the map and is most abundant in a remnant prairie in Lagrange County. My specimens are all from roadsides and fallow fields.
Perennial from a stout rhizome or branching caudex, ±viscid-pubescent throughout with brownish hairs; stems erect, 3-10 dm, simple to the narrow, crowded infl; lvs pinnately compound, the basal long-petioled; lfls 7-11, or only 5 in the uppermost lvs, increasing in size distally, to 7 cm, often alternating with minute folioles; fls ochroleucous or nearly white, 12-18 mm wide; sep ovate, much longer than the lanceolate bractlets, nearly as long as the pet; style deeply lateral; achenes obovoid, 1 mm, finely striate; 2n=14. Dry woods and prairies; e. Que. to Mack., s. to D.C., Ind., Mo., and Ariz. June, July. Ours is var. arguta. (Drymocallis agrimonioides)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.