Texture is similar to purslane. We are still in late winter in CT but this entire plant is bright green. I found in the garden where amaranth has been growing past couple of years. Interested in knowing what family this belongs to. Please see pic.
It could be purslane, but with depleted food stores in the leaf tissue, the inter- node length is diminished, and leaves grow closer together. If it has white sap, though, don't eat it- its probably spurge. Otherwise, it looks like purslane. Did you try eating a tiny bit to see if its got that sweet n sour purslane tang?