Pithecellobium tortum has delicate branches and tiny light-green compound leaves and is spiny. The leaves fold up at night or in subdued light. Will tolerate temperatures in the upper 30F range, but not for a long time. Trunks short, to about 8 inches in diameter. Mimosa-like flowers are off-white and fragrant. Ornamental curious seed pods. Drought tolerant. Butterfly attractor. Great bonsai plant.