This plant belongs to the hyacinth family although I don't know exactly which species it is. All I know is that it is a bulb which sprouted in a succulent that I bought at a show many years ago. It remained small and survived many house moves until I finally planted it in my garden and it flowered for the first time.
It seems strange that insects would visit green flowers because the green colour makes it difficult to see in amongst the leaves of the plant and yet there are often bees on these flowers and you can see the forming seeds in the bottom left. The large white parts below the anthers are actually unusually enlarged filaments and perhaps these guide the insects to the flower, since the petals are green
