A lovely, small evergreen tree which is water wise and thrives in the shade or semi-shade. The stunning white flowers are streaked with purple and look like an orchid at first glance. They occur in abundance in autumn-summer and are long lasting. It is useful for a pruned hedge or an informal hedge/screen. The seed pods crack open noisily Named for Johan Georg Duvernoy (1692-1759) a German botanist and surgeon.and the seed is dispersed and that gives rise to the common name. The flowers are pollinated by carpenter bees and the wood is hard.