Papaya begonia is a deciduous shrub or small tree, 7 meters high and without branches; Branchlets cylindrical, purplish red, yellowish tomentose when young; The bark falls off in pieces, and the backward trace is obvious. Leaf blade elliptic or elliptic oblong, 5-9 cm long and 3-6 cm wide, with acute apex, wedge-shaped or nearly round base, spiny serrations on the edge, glands on the teeth, glabrous surface, sparsely pilose along veins when young, and yellow-white fluff on the back when young; Petiole stout, long 1- 1.5 cm, covered with yellow-white fluff, with rod-shaped glands on both sides; Stipules membranous, elliptic-lanceolate, 7- 15 mm long, tapering at the top, glandular toothed at the edge, pilose along veins. Flowers solitary at the end of short branches, 2.5-3 cm in diameter; Pedicel stubby, 5- 10 mm long, glabrous; Calyx tube glabrous outside; Calyx lobes triangular-lanceolate, about 7 mm long, tapering at the top, with sparse glandular teeth at the edge, glabrous or sparsely pilose outside, densely covered with light brown villi inside, longer than calyx tube, and reflexed in fruit; Petals obovate and reddish; Stamens ca. 5 mm; Style about. 6 mm, pilose. Pear fruit is oval, long10-15cm, dark yellow, shiny, woody, slightly sour, fragrant and short. It blooms in April and bears fruit in September -65438+ 10. [ 1-2]