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Weeds and Plant Identification
Knawel - Scleranthus annuus

Knawel plant

Knawel flowers

Small plants
 

 
Knawel
Scleranthus annuus L.
Caryophyllaceae (Pink family)
 
Life cycle
Prostrate, mat-forming summer or winter annual.
Leaves
Opposite, very narrow and linear, grayish green leaves with sharp points resemble pine needles or grass leaves. Leaves are joined at the nodes by a translucent membrane. 
Stems
Grayish green, prostrate and spreading stems with numerous branches can form dense mats.
Flowers and fruit
Spiny, green or rarely whitish flowers are formed in clusters in the leaf axils. Flowers are generally not distinguishable. Egg-shaped, capsulelike fruit contain one seed.
Reproduction
Seeds.
 
 
Similar weeds
Birdseye pearlwort
(Sagina procumbens L.)
Differs by having a perennial nature with spreading stolons; bright green foliage; more distinguishable, small white flowers; and fruit that are persistent capsules with many seeds.
 
 

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