The papaya is a small, sparsely branched tree, usually with a single stem growing from 5 to 10 m (16 to 33 ft) tall, with spirally arranged leavesconfined to the top of the trunk. The lower trunk is conspicuously scarred where leaves and fruit were borne. The leaves are large, 50–70 cm (20–28 in) in diameter, deeply palmately lobed, with seven lobes. All parts of the plant contain latex in articulated laticifers. Papayas are dioecious. The flowers are five-parted and highly dimorphic; the male flowers have the stamens fused to the petals. The female flowers have a superior ovary and five contorted petals loosely connected at the base.:235 Male and female flowers are borne in the leaf axils, and the males are multiflowered dichasia, and the female flowers are in few-flowered dichasia.[citation needed] The pollen grains are elongated and approximately 35 microns in lengthThe flowers are sweet-scented, open at night, and wind- or insect-pollinated