Are the leaves kind of "grassy" looking with a wide blade and are there some fine hairs on the leaves? The reason I am asking is that I just redid the center island garden here over the winter, but am now inundated with a white flower that looks suspiciously like yours (there has got to be at least 100 or more in a small area). I have been trying to figure out if they are from a bulb I planted, too.