The lower right plant
Single oval leaf in the middle of the stalk completely surrounding it. The single stem protrudes top and bottom of the leaf. The floral sets a reset
Claytonia perfoliata (miner's lettuce, winter purslane, or Indian lettuce; syn. Montia perfoliata) is a fleshy annual plant native to the western mountain and coastal regions of North America from southernmost Alaska and central British Columbia south to Central America, but most common in California in the Sacramento and northern San Joaquin valleys.