Chestnut which are mildly poisonous to humans. Nor should they be confused with water chestnut, which are tubers of an aquatic herbaceous plant in the sedge family Cyperaceae. Other trees commonly mistaken for chestnut trees are the chestnut oak ("Quercus prinus") and the American beech ("Fagus grandifolia"), both of which are also in the Fagaceae. The name "chestnut" is derived from an earlier English term "chesten nut", which descends from the Old French word "chastain" (Modern French, "châtaigne"). The French word in turn derives from Latin "Castanea" (also the scientific name of the tree), which traces to the Ancient Greek word
Nyssa sylvatica wear and some acids has led to its use as factory flooring. Nyssa sylvatica Nyssa sylvatica, commonly known as Tupelo, Black gum, sour gum, is a medium-sized deciduous tree native to eastern North America from the coastal Northeast USA and southern Ontario south to central Florida and eastern Texas, as well as Mexico. "Nyssa sylvatica"'s genus name "(Nyssa)" refers to a Greek water nymph; the species epithet "sylvatica" refers to its woodland habitat. The species' common name tupelo is of Native American origin, coming from the Creek words "ito" ‘tree’ and "opilwa" ‘swamp’; it was in use by the mid-18th