Cerastium nutans Raf.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Viscid-pubescent annual 1–4.5 dm, mostly softer and leafier than our intr. spp.; lvs narrowly lance-oblong to oblanceolate, 1.5–5(–8) cm × 5–10(–13) mm, acutish; infl ± open, loosely cymose; bracts wholly herbaceous; sep 3.5–5 mm, relatively broad, thin, and blunt, thinly to fairly copiously provided with short to fairly long, sometimes gland-tipped hairs that do not surpass the sep-tip; pet from a little shorter to evidently longer than the sep; bifid to a depth of mostly 1–2 mm, or seldom wanting; stamens 10 or seldom (especially in apetalous forms) only 5; fr 8–15 mm, straight or curved, mostly 2–3 times as long as the sep. 2n=34–36. Woods and open places, sometimes in disturbed sites, but not so weedy as our intr. spp.; N.S. to Mack., s. to Ga., Ariz., and Oreg. Apr.–July. (C. brachypodum (A. Gray) B. L. Rob., the arbitrarily delimited, geographically coextensive phase with pedicels mostly 0.5–1.5 cm, instead of 1.5–4 cm as in typical material)