Viscid-pubescent annual or winter-annual 0.5-3 dm; lvs mostly 1-2.5 cm נ5-15 mm, ovate to obovate or the lower spatulate, obtuse or rounded to acutish; infl compact, or becoming more open in age and then with discrete glomerules of fls; pedicels 1-5 mm, mostly shorter than the sep; bracts wholly herbaceous; sep 4-5 mm, lanceolate, acute, somewhat scarious-margined, the sep and commonly also the bracts provided with long, forward-pointing, eglandular hairs that protrude well beyond the tip, and sometimes glandular as well; pet a little shorter than or about equaling the sep, evidently bifid, commonly to 1 mm or more, or sometimes none; stamens 10; fr 6-8(-10) x 1.5-2 mm, sometimes upcurved; 2n=72. Native of Eurasia, now a cosmopolitan weed, and found ±throughout our range, especially southward. Apr.-July. (C. glomeratum)

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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