Parkinsonia aculeata is a species of perennial flowering tree, has a high tolerance, drought. The leaves are alternate pennate, stems are in the hairless. The branches grow double, triple, sharp spines at the axils. The flowering period is the middle months of spring. The Fruit is a seedpod, leathery, stalked a light, brown, sharp, pointed pod, 3 13 cm. Aculeata is a major, invasive species in Australia. Insects have been released into Parkinsonia infestations.
Species of perennial flowering tree, Major, invasive species in Australia