Prunus umbellata Prunus umbellata Prunus umbellata, called flatwoods plum, hog plum and sloe plum, is a plum species native to the United States from Virginia, south to Florida, and west to Texas. "Prunus umbellata" can reach in height with a spread. It has alternate serrate green leaves that turn yellow in Autumn. Flowers are white, creamy, or grayish. Fruits are round, purple, and in diameter. "P. umbellata" trees can live up to 40 years and are very difficult to distinguish from "Prunus angustifolia", with which it hybridizes easily. The trees bloom and bear fruit later than other plums. The fruits mature August-October.
Prunus tianshanica Prunus tianshanica Prunus tianshanica, the Tianshan cherry, is a species of cherry native to the Tianshan Mountains of Central Asia, preferring to grow at 800-1000m. "Prunus tianshanica" is a shrub reaching . The bark is grey, turning browner with age. The flowers are pink, and the dark red fruits, although small, are high in sugar and pleasant to the taste. It hybridizes naturally with "Prunus cerasifera", and the offspring produce fruit. A phylogenetic reconstruction using twelve chloroplast loci and three nuclear genes of 84 species of "Prunus" shows that "Cerasus" is indisputably a synonym (and subgenus) of "Prunus" and that