Faidherbia albida (syn. Acacia albida Delile) is a species of Faidherbia native to Africa and the Middle East, formerly widely included in the genus Acacia. It has also been introduced to India and Pakistan. Common names for it include Apple-ring Acacia, Ana Tree and Winter Thorn. It is a thorny tree growing up to 6–30 m tall and 2 m in trunk diameter. Its deep-penetrating tap root makes it highly resistant to drought. The bark is grey, and fissured when old. There are 11000 seeds/kg. Faidherbia albida is not listed as being a threatened species. It grows in areas with 250-600mm/yr. of rain.