Holosteum umbellatum L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Annual, somewhat glaucous; stems tufted, unbranched, 1–3 dm, stipitate-glandular especially near the middle, generally glabrous at top and bottom; lvs stipitate-glandular around the margins, the basal ones tufted, oblong to oblanceolate, 1–2.5 cm, often short-petiolate, the cauline few and sessile; peduncle much surpassing the lvs, with 3–15 fls on slender pedicels that elongate to 1.5–3 cm in fr; sep ca 3 mm at anthesis, somewhat accrescent; pet generally a little longer than the sep; stamens 3–5, alternipetalous; capsule well surpassing the cal, its valves ± strongly outrolled from the tip; seeds 1 mm; 2n=20. A weed of waste places, native to Eurasia, widely intr. in the U.S. and nearly throughout our range. Apr–May.