Scleranthus annuus L.
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Authority
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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Family
Caryophyllaceae
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Scientific Name
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Description
Species Description - Low, diffuse, spreading, glabrous or puberulent annual or biennial to 15 cm; lvs linear, the larger ones 5–25 mm; fls sessile or subsessile; sep equaling or longer than the hypanthium, lanceolate, ± acute, with a very narrow scarious border (ca 0.1 mm wide) near the tip; stamens usually 5–10; 2n=22, 44. A weed in fields, roadsides, and waste places; native of Eurasia, established in our range from Que. to Wis., s. to S.C. and Mo. All summer.
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Common Names
annual knawel