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Sorry, that is incorrect! The weed pictured is carpetweed (Mollugo verticillata) — a late-germinating, summer annual that forms circular patches several feet in diameter. Light green leaves are smooth in whorls of three to eight at each node — widest above the middle and tapering to the base. Stems are smooth and branched, lying on the ground with tips ascending. Small white flowers form in the leaf axils and grow in clusters on slender, large stalks.
Carpetweed germinates much later than other summer weeds and may be missed by early treatments. Once it germinates, it grows quickly. Carpetweed thrives in thin turf and can usually be found in new spring plantings that have not matured prior to entering summer. Due to its low prostrate growth habit, it can be missed during mowing. Apply a preemergence herbicide, such as Dimension® or Snapshot® specialty herbicide, in late spring or early summer. In a lawn setting, maintain a proper turfgrass mowing height. A base fertilizer program also will encourage a lush lawn to compete with carpetweed.