I saw this kind of flower in Mr. Caitou's photography. What kind is it?

tree of Rosaceae. It is 1-14 meters high, with a broad and round crown, thin young branches, slightly buckled, cylindrical, hairless, reddish brown and dark brown old branches. Winter buds are ovate, the apex is acuminate, and the scales are slightly villous and reddish brown. Leaf blade elliptic or ovoid, 3-8 cm long and 2-3.5 cm wide, apex acuminate, sparse tail acuminate, base wedge-shaped or round, margin with fine sharp serrations, slightly pubescent or completely hairless when tender; The petiole is 2-5 cm long, with pubescence and a few glands when it is young, and soon it will all fall off without hair; Stipules membranous, lanceolate, about 3 mm long, entire or glandular toothed, caducous. Umbellies, with 4-6 flowers, without total peduncle, clustered at the top of branchlets, with a diameter of 5-7 cm; Pedicel slender, 1.5-4 cm, glabrous; Bracts membranous, linear-lanceolate, with glandular teeth at the edge, glabrous, caducous; Flower diameter 3-3.5 cm; Calyx tube glabrous outside; Sepals lanceolate, apex acuminate, entire, 5-7 mm long, glabrous outside, tomentose inside, longer than calyx tube; Petals obovate, 2-2.5 cm long, blunt apex, short claws at the base, white; Stamens 15-2, uneven in length, about half of petals; Styles 5 or 4, villous at base, longer than stamens. The fruit is nearly spherical, with a diameter of 8-1 mm, red or yellow, and the stalk depression and calyx depression are slightly sunk, and the sepals fall off; The pedicel is 3-4 cm long. The flowering period is from April to June, and the fruiting period is from September to October.