Zanthoxylum simulans

'Sichuan Pepper'. A hardy deciduous spreading shrub to small tree, armed to the hilt with spines, even on the very aromatic, graceful leaves. Crush them (without impaling yourself) to release a heady fragrance. Small bunches of little reddish fruit in autumn have edible seed cases, much used in Asia as a very distinct spice. Essential in many stir-fries etc.