eight petaled flower

This garden flower was described as a Tulip to me. But, tulips are supposed to have just 6 petals. It came as a bulb (not a seed). While the flowers may be regarded as showy, they are not very large. Flowers with 8 petals and stamens with one stigma and style (which is out-of-focus and at an incorrect angle in this picture).

Would be glad to know more about this plant -- drop me some notes if you can help.