You'd think such a tree would be Irish wouldn't you? But no, the potato tree (Solanum wrightii) comes from Brazil. This specimen was found in the Brisbane Botanical Gardens; the flowers are fragrant and transition from white, lilac to purple much like the Yesterday-Today-and-Tomorrow shrub which is also from Brazil. The photo below, shows how prolific the flower is but I've yet to find anything to suggest you can eat the 'fruit' that comes after. The solanum genus includes potatoes, tomatoes and aubergine.