also: じゃけついばら
Mysore thorn; Caesalpinia decapetala var. japonica
A thorny climbing shrub native to East Asia, often used for hedges. The scientific name is Caesalpinia decapetala var. japonica.
Mysore thorn has sharp thorns, so it is often used for hedges.
Written 蛇結茨, a compound of 蛇結 “snake-entangling” and 茨 “thorny shrub,” referring to its hooked thorns and tangled growth.