Portulacaceae, Claytonia perfoliata, Miner’s lettuce
Miner’s lettuce, a close relative to purslane and Talinium triangulare (fruticosum). Edible and easy to grow. Miner’s lettuce can be found growing wild during the late months of winter and early months of spring around Mt. Tamalpais, where I grew up. Does well with limited sunlight, even in Redwood understory.