Paliurus spina-christi, commonly known as Jerusalem Thorn, Garland Thorn, Christ's Thorn, or Crown of Thorns, is a species of Paliurus native to the Mediterranean region and southwest and central Asia, from Morocco and Spain east to Iran and Tajikistan.
It is a deciduous shrub or small tree growing to 3-4 m tall. The shoots are zig-zagged, with a leaf and two stipular spines (one straight, one curved) on the outside of each kink. The leaves are oval, 2-5 cm long and 1-4 cm broad, glossy green, with an entire margin. The fruit is a dry woody nutlet centred in a circular wing 2-3.5 cm diameter.
Synonyms include Paliurus aculeatus Lam., P. australis Gaertn., and Rhamnus paliurus L.