Ailanthus integrifolia

Ailanthus integrifolia, white siris, is a tree in the family Simaroubaceae. The specific epithet integrifolia is from the Latin meaning "entire leaves", referring to the leaflet margins.

Description
Ailanthus integrifolia grows as a large tree up to 55 m tall with a trunk diameter of up to 65 cm. The smooth bark is light brown or grey. The ellipsoid fruits, a winged form called a samara measure up to 22 cm long. by five cm (2 inch) wide, possibly the largest samaras known.

Distribution and habitat
Ailanthus integrifolia grows naturally in India, Vietnam, Malesia and Papuasia. Its main habitat is primary rainforest from sea-level to 900 m altitude.