The fruit of Duvernoia adhatodoides (SA Tree List No. 681) is the secret to the common name of pistol bush given to this tree. The immature green fruits seen in the picture develop to 3 cm club-shaped capsules. Upon ripening, the capsules split open explosively with loud cracks resembling pistol shots. The seed dispersal is then performed by these mechanical distribution events. This may be observed from end summer through to winter (Coates Palgrave, 2002).