Portulaca
From eagle-rock.org
Portulaca is the type genus of the flowering plant family Portulacaceae, comprising about 40-100 species found in the tropics and warm temperate regions. They are also sometimes known as Rose Moss or more commonly Moss Roses.
Common purslane (Portulaca oleracea) is widely considered an edible plant, and in some areas an invasive type of weed.