Buttonball \But"ton*ball`\, n. (Bot.) See {Buttonwood}.
Plane \Plane\, n. [F., fr. L. platanus, Gr. ?, fr. ? broad; -- so called on account of its broad leaves and spreading form. See {Place}, and cf. {Platane}, {Plantain} the tree.] (Bot.) Any tree of the genus {Platanus}.
Note: The Oriental plane ({Platanus orientalis}) is a native of Asia. It rises with a straight, smooth, branching stem to a great height, with palmated leaves, and long pendulous peduncles, sustaining several heads of small close-sitting flowers. The seeds are downy, and collected into round, rough, hard balls. The Occidental plane ({Platanus occidentalis}), which grows to a great height, is a native of North America, where it is popularly called {sycamore}, {buttonwood}, and {buttonball}, names also applied to the California species ({Platanus racemosa}).