Papaya (scientific name: Chaenomeles sinensis (Thouin) Koehne): Rosaceae Chaenomeles, shrubs or small trees, 5-10 meters high, leaf blade elliptic ovate or elliptic obovate oblong, thin, 5-8 cm long, 5.5 cm wide and 3.5 - 5-10 mm long, petiole, micro pilose, glandular teeth; fruit oblong 10-15 cm long, dark yellow, wood, aromatic flavor, fruit stalk short. The flowering period is April, the fruit period is 9-10 months.