The greengages are a group of cultivars of the common European plum. The first true greengage came from a green-fruited wild plum that originated in Iran (Persia). Greengages are grown in temperate areas and are known for their rich, confectionery flavor. They are considered to be among the finest dessert plums. Greengage fruit is identified by their round-oval shape and smooth-textured, pale green flesh; they are on average smaller than round plums but larger than mirabelle plums (usually between 2 and 4 cm diameter). The skin ranges in color from green to yellowish, with a pale blue "blush" in some cultivars; a few Reine Claudes, such as 'Graf Althanns,' are reddish-purple due to crossbreeding with other plums.
In botany, a fruit is a seed-bearing structure in flowering plants formed from the ovary after flowering.
Fruits are how flowering plants disseminate their seeds. Edible fruits, in particular, have long propagated using the movements of humans and animals in a symbiotic relationship that is the means for seed dispersal for the one group and nutrition for the other; in fact, humans and many animals have become dependent on fruits as a source of food.