Botany
Many cherries are members of the subgenus Cerasus, which is distinguished by having the flowers in small corymbs of several together (not singly, nor in racemes), and by having a smooth fruit with only a weak groove or none along one side. The subgenus is native to the temperate regions of the Northern Hemisphere, with two species in America, three in Europe, and the remainder in Asia. Other cherry fruits are members of subgenus Padus. Cherry Trees that have a low exposure to light tend to have a bigger leaf size so that they can intercept all light possible. Cherry trees that have high exposure to light tend to have thicker leaves to concentrate light and have a higher photosynthetic capacity.
The majority of eating cherries are derived from either Prunus avium, the wild cherry (sometimes called the sweet cherry), or from Prunus cerasus, the sour cherry.
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