From the J.L. Hudston catalog: "The famous African tree with a huge, swollen trunk up to 30 feet in diameter, and not more than 60 feet tall. The thickest trunk in the world. Large, white, hibiscus-like 6" flowers are pollinated by bats. The foot-long, gourd-like fruits are filled with refreshing, lemon-flavored pulp and edible seeds. Leaves are often eaten like spinach. The trunk stores considerable water, and is used as a reservoir, sometimes being tapped for as much as 1000 gallons. Hollowed out, they are used as rooms. Worshipped as a fertility tree."

That's Adansonia digitata, better known as the Baobab.