Blooming over the past month or so have been the Meadow Beauties (Rhexia sp.). These will appear in overgrown areas along roadsides and in untended fields.
With blooms a little less than an inch wide, these turn up in large clusters of plants. There are at least two species that might appear here. I suspect that ours are Rhexia mariana, or the Maryland Meadow Beauty. I’m not confident enough to be sure.