native, sometimes considered a weed
pictures taken in may (left) and june (right)
also just called "venus lookingglass" and "clasping bluewort," this plant likes poor soil and tends to pop up anywhere there isn't taller competition. it will occasionally pop up in turfgrass, gardens, or pretty much anywhere else there's a spot for it. it doesn't seem especially aggressive; it doesn't even grow in large patches like many other weedy plants.
it gets its name from its seeds, which the audubon society describes as "somewhat shiny."
clasping-leaved Venus'-looking-glass blooms in june and august.