What plant is that?

Click on photo below to view larger image

Capetweed plantCarpetweed close-upCarpetweed close up of flowers and seed capsules
 Upper photos: © Francis R. Underwood 2019
Bottom photo: ©David G. Smith, http://www.delawarewildflowers.org

The mystery plant for December is an annual with white flowers and whorled leaves. The leaves are 10-15 mm long and 2-5mm wide. The leaves form mats lie flat on the ground.  The white flowers are on pedicels 5-10 mm long. Several flowers are produced from each leaf axil. The anthers are long and yellow in color. The seeds are formed inside a brown capsule which is 2-3mm long and contains many seeds. This plant is not particular as to where it grows. It can be found in cracks of sidewalks, drawn-down river edges and dunes.  It blooms from June through October.

It’s. . .

Botanical Name:
  
Mollugo verticillata
Common Name:
   Carpetweed
Family:
   Molluginaceae (Carpet-weed Family)
Habitat:
   Dunes, edges of rivers, cracks in sidewalks