Plum fruit

A plum is a drupe fruit of the genus Prunus. The subgenus is distinguished from other subgenera (peaches, cherries, bird cherries, etc.) in the shoots having a terminal bud and solitary side buds (not clustered), the flowers in groups of one to five together on short stems, and the fruit having a groove running down one side and a smooth stone (or pit).

Mature plum fruit may have a dusty-white coating that gives them a glaucous appearance. This is an epicuticular wax coating and is known as "wax bloom". Dried plum fruits are called dried plums or prunes, although prunes are a distinct type of plum, and may have antedated the fruits now commonly known as plums

Description

Plums are a diverse group of species. The commercially important plum trees are medium sized, usually pruned to 5-6 meters height. The tree is of medium hardiness.[2] Without pruning, the trees can reach 12 meters in height and spread across 10 meters. They blossom in different months in different parts of the world; for example, in about January in Taiwan and about April in the United States.[3]
Fruits are usually of medium size, between 1 to 3 inches in diameter, globose to oval. The flesh is firm, juicy and mealy. The fruit's peel is smooth, with a natural waxy surface that adheres to the flesh. The fruit has a single large seed.

Source: Wikipedia