Ailanthus integrifolia, white siris, is a tree in the family Simaroubaceae. The specific epithet Latin: integrifolia is from the Latin meaning "entire leaves", referring to the leaflet margins.
Ailanthus integrifolia grows as a large tree up to 55m (180feet) tall with a trunk diameter of up to 65cm (26inches). The smooth bark is light brown or grey. The ellipsoid fruits, a winged form called a samara measure up to 220NaN0 long. by five cm (2 inch) wide, [1] possibly the largest samaras known.
Ailanthus integrifolia grows naturally in India, Vietnam, Malesia and Papuasia. Its main habitat is primary rainforest from sea-level to 900m (3,000feet) altitude.