Oxalis is a modest plant, considered more weed than flower. The Oxalis shown here is Oxalis stricta, also known as yellow woodsorrel or sourgrass. In season, this Oxalis grows in profusion around here in vacant lots, underneath trees, and on hillsides. It’s quite edible, and great for chewing on with contemplation. When I am in “human cow” mode and chewing on my cud of Oxalis, it is pleasing that sourgrass does not really live up to its name. It is not sour, at least not so much.
Related recent images: Street Grasses, Decorative Grasses, and Blades of Grass.