Patch of Miner's lettuce growing in the Presidio of San Francisco.
Miner's lettuce, with crunchy round leaves and tiny white flowers, is a fairly common groundcover in areas with moisture and a mix of shade and sun.
Claytonia perfoliata (Miner's lettuce, Winter Purslane, Spring Beauty, 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.
