miner's lettuce

Claytonia perfoliata (syn. Montia perfoliata), also known as Indian lettuce, spring beauty, winter purslane, or miner's lettuce, is a flowering plant in the Montiaceae family. It is a fleshy, herbaceous annual plant native to the western mountain and coastal regions from southernmost Alaska and central British Columbia all the way south to Central America, but most common in California in the Sacramento and northern San Joaquin Valleys.