Plants with a light, pleasant, celery-like odor; stems branched, 4-8 dm; lower lvs long-petioled, commonly thrice compound, the upper once or twice compound and with wholly sheathing petioles; lfls ovate to oblong or elliptic, mostly 1-4 cm, sometimes some of the upper confluent; longer rays 4-9 cm in fr; fr mostly 4-5 נ3-4 mm, elliptic, slightly compressed laterally, not winged, the ribs all low; 2n=22. Dry woods and open, rocky slopes, reputedly sometimes on shale-barrens with the next sp., s. Que. to c. Ga., w. to Minn., e. Kans., Okla., and Tex. Apr.-June.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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