Any of about 18 species of deciduous timber and nut-producing trees that make up the genus Carya , in the walnut family.
About 15 species are native to eastern North America and 3 to eastern Asia. The fruit is an egg-shaped nut enclosed in a fleshy husk. Some species
principally shagbark hickory ( C. ovata ), shellbark hickory ( C. laciniosa ), mockernut hickory ( C. tomentosa ), and pecan
produce large, sweet-tasting, edible nuts. The pecan, the most valuable species economically, is cultivated for its flavourful nuts and its light-coloured wood. The wood of other hickories is used as fuel and for tool handles, sports equipment, furniture, and flooring.