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 xueluoensis Prunus xueluoensis Prunus xueluoensis is a species of "Prunus" found in Hubei and Jiangxi provinces of China. It is a shrubby tree 0.5 to 3m tall, preferring to grow at 1100 to 1500m above sea level. It is only known from three mountains; Xueluozhai, Lushan and Jinggangshan. It is morphologically similar to "Prunus tomentosa" and "Prunus tianshanica". It differs from them by a number of features including having two to four flowers per inflorescence, many more stamens per flower, a glabrous pistil and a black fruit. Genetically, "P. xueluoensis" is more closely related to "P. polytricha", "P. jingningensis", and "P.