Claytonia perfoliata subsp. perfoliata
Rarely does this plant look so well developed in nature here. These were growing pampered in garden soil with watering AND protected from deer. Many people seem to consider these a weed (this spring some of our visitors were visibly horrified to see them being treated as a food crop) but when young we love them as part of our diet. Their young leaves are superior to baby spinach in both taste and texture. As they get older the oxalic acid content gets too high to want to eat them.
This is what they typically look like here. Around which time the deer find them.