Annual or rarely biennial, 6-15 dm, amply leafy; stem hirsute, the hairs spreading except near the top; basal lf-blades elliptic to suborbicular, coarsely toothed, to 10 נ7 cm, ±abruptly long-petiolate; cauline lvs numerous, broadly lanceolate or broader, all except sometimes the uppermost usually sharply toothed; heads several to very numerous; invol 3-5 mm, finely glandular and sparsely beset with long, flattened, transparent hairs; disk 6-10 mm wide; rays 80-125, white or rarely anthocyanic, 4-10 נ0.5-1.0 mm; disk-cors 2.0-2.8 mm; achenes 2-nerved; pappus of the disk-fls double, with 10-15 bristles and several very short, slender scales (visible at 20x), that of the rays-fls of short scales only; 2n=27, 54. A weed in disturbed sites over most of the U.S. and adj. Can., more common northward.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.

From Flora of Indiana (1940) by Charles C. Deam

Infrequent to frequent in open woods and clearings throughout the state. Also a frequent to common weed in hayfields and waste cleared grounds and along roadsides. In some hayfields it is an obnoxious weed.

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Indiana Coefficient of Conservatism: C = 0

Wetland Indicator Status: FACU