What are the flowers on the pear tree?

Umbrella, referred to as corymb in horticulture, is mostly white, and the stamens are colored before flowering. Flowers 7 ~ 10, generally 5 petals, double petals, wide oval, and the whole apex is rodent-shaped; 20 ~ 30 stamens; Style is longer than stamens, mostly 4 ~ 5, and more than 5 are rare and free. The flowering period in Shanghai is from late March to early April.