| extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally | large shrub or shrubby tree having sharp spines and pinnate leaves with small deciduous leaflets and sweet-scented racemose yellow-orange flowers; grown as ornamentals or hedging or emergency food for livestock; tropical America but naturalized in southern United States |
| | spiny tree having dark red edible fruits |
| | thorny Eurasian shrub with dry woody winged fruit |
| | East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu |