The jackfruit (Artocarpus heterophyllus), also known as jack tree

The leaves are alternate and spirally arranged. They are gummy and thick and are divided into a petiole and a leaf blade. The petiole is 2.5 to 7.5 cm (1 to 3 inches) long. The leathery leaf blade is 20 to 40 cm (7 to 15 inches) long, and 7.5 to 18 cm (3 to 7 inches) wide and is oblong to ovate in shape.