There is a plant in northern Jiangsu that looks like a pear and is called papaya locally. It smells particularly fragrant and hard. I wonder what its scientific name is. Solve it!

It belongs to Rosaceae, and its fruit can be used as medicine, which has the functions of relaxing muscles and activating collaterals and regulating stomach dampness. China Pharmacopoeia records Changyang's "Qiu Zi Chaenomeles" as a kind of wild medicinal Chaenomeles, which has unique medicinal and health-care value and has the reputation of "fruit of all benefits". Chaenomeles rugosa is also a unique single ornamental tree species. Dense and prickly branches can be used as green bamboo shoots.

Extended data

Deciduous shrub, 2 meters high, with erect branches and thorns; Branchlets cylindrical, slightly curved, glabrous, purplish brown or dark brown, with few light brown lenticels; Winter buds are triangular-ovate, with acute apex, nearly hairless or pubescent scales, and purple-brown.

Leaf blade ovoid to ovoid, sparsely round, 3-9 cm long and 1.5-5 cm wide, with sharp or obtuse tip, wedge-shaped to broad wedge-shaped base, sharp serrations on the edge, and flat teeth, hairless or pubescent on the upper and lower veins of new buds; Petiole length is about 1 cm; Stipules are large, herbaceous, kidney-shaped or semi-circular, thin oval, 5 5- 10/0mm long and12-20mm wide, with sharp double serrations at the edges and no hair.

The first leaf of the flower is open, and 3-5 flowers are clustered on the 2-year-old branches; Pedicel stubby, ca. 3 mm long or subsessile; Flowers 3-5 cm in diameter; Calyx tube campanulate, glabrous outside; Sepals erect, semicircular, thin ovate, 3-4 mm long. 4-5 mm wide, about half the length of calyx tube, blunt apex, whole teeth or wavy, yellow-brown eyelashes; Petals obovate or nearly round, and the base extends into short claws.