Malus sylvestris to most European countries. It occurs in a scattered distribution pattern as single individuals or in small groups. In the past "M. sylvestris" was thought to be the most important ancestor of the cultivated apple ("M. pumila"), which has since been shown to have been originally derived from the central Asian species "M. sieversii". However another recent DNA analysis confirms that "M. sylvestris" has contributed significantly to the genome. The study found that secondary introgression from other species of the genus "Malus" has greatly shaped the genome of "M. pumila", with "M. sylvestris" being the largest secondary contributor. It also
Malus fusca tough, resilient wood, used for making implements, and for its bark, used for a wide range of medicinal purposes. Malus fusca Malus fusca, with the common names Oregon crabapple and Pacific crabapple, is a North American species of crabapple. It is native to western North America from Alaska, through British Columbia, to northwestern California. It grows in temperate coniferous forest, primarily in the Cascade Range and the Pacific Coast Ranges. "Malus fusca" is a deciduous tree up to tall. Leaves are up to 10 cm (4 inches) long. Flowers are white or pale pink, blooming in Spring. The fruits are