Supposedly - from information concerning this succulent - "The flowers are not very showy; emerging in white, tubular clusters on a stem."
However, I personally find these 1/4 inch, mini flowers kind of pretty.

To give you an idea of the tiny flower size, here's something I read from growers about their pollinating Hawarthia in a greenhouse: "A pair of fine tweezers and a headband magnifier are useful tools for pollination. The tweezers should be sterilized before using." The flowers really are quite small. The stalks that the flowers grow on are as thin as thread.