Solanum repandum

Description

Solanum repandum is a species of evergreen shrub native to various island groups across the southern Pacific Ocean and occasionally grown for its edible fruit. Only partially domesticated and very rare in cultivation outside of its native range, it is also known as kokoua or huou. Solanum repandum will apparently hybridize with a number of close relatives, including the South American naranjilla, pseudolulo, and Solanum candidum, along with the Solanum lasiocarpum, from India. Solanum repandum is, in fact, so similar in growth habit and in its fruit that it has been possibly considered a subspecies of either Solanum quitoense (naranjilla) or Solanum lasiocarpum. The three species are native to different geographical areas, and tolerate slightly different climatic conditions, but their overall habit of growth is nearly identical, as is the use for the fruit in local cuisines. Each of them features a unique ring of emerald green juice surrounding the seeds in fruit that otherwise ripen to yellow or orange. The immature fruit is covered is bristles, which detach easily upon full ripening. Like many of its relatives, S. repandum is a close relative of other nightshades cultivated for their edible fruit, including the tomato (S. lycopersicum), the naranjilla (S. quitoense) and the eggplant (S. melongena). It will readily hybridize with Solanum candidum, Solanum quitoense (naranjilla), Solanum lasiocarpum (Indian nightshade), and Solanum sessiliflorum (cocona), though in some cases those hybrids are sterile. Scientifically, S. repandum is of additional scientific interest, as is S. candidum, as they appear to be the closest relatives and a possible link species between the Asian and South American members of the same botanical clade.