What flowers bloom at night?

1.There are flowers that bloom at night. The one that I know of was called "Night Blooming Cereus" by a friend who had one in his greenhouse. We went out on the night that it bloomed. It was a beautiful large white flower with many petals. See attached links.

2.all most all white flowers that have deep fragrance blooms at night.eg jasmine

because they dont have color to attract insects the fragrance works for it