Prunus spinosa the more shrubby habit with stiffer, wider-angled branches of "P. spinosa"; in summer by the relatively narrower leaves of "P. spinosa", more than twice as long as broad; and in autumn by the colour of the fruit skin purplish black in "P. spinosa" and yellow or red in "P. cerasifera". "Prunus spinosa" has a tetraploid (2"n"=4"x"=32) set of chromosomes. The specific name "" is a Latin term indicating the pointed and thornlike spur shoots characteristic of this species. The common name "" is due to the thorny nature of the shrub, and its very dark bark. The word commonly used
Prunus sibirica Prunus sibirica Prunus sibirica, called Siberian apricot (), is a species of shrub or small tree native to eastern China, Japan, Korea, Mongolia, and eastern Siberia. It is in the genus "Prunus" in the rose family, Rosaceae, one of several species whose fruit are called apricot, although this species is rarely cultivated for its fruit. The species was named by Carl Linnaeus in 1753. The species is highly genetically diverse. It grows in the form of a small tree with spreading branches and reaches a height of . It is very frost resistant and can survive temperatures down to .