Malus fusca 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 small round apple-shaped pomes, red, yellow, or yellow-green. The fruit can be eaten raw or cooked, however it has
Malus are borne in corymbs, and have five petals, which may be white, pink or red, and are perfect, with usually red stamens that produce copious pollen, and a half-inferior ovary; flowering occurs in the spring after 50–80 growing degree days (varying greatly according to subspecies and cultivar). Apples require cross-pollination between individuals by insects (typically bees, which freely visit the flowers for both nectar and pollen); all are self-sterile, and (with the exception of a few specially developed cultivars) self-pollination is impossible, making pollinating insects essential. Several "Malus" species, including domestic apples, hybridize freely. They are used as food plants