Koelreuteria paniculata is a tree to 10 m; bark light brown, furrowed, twigs with raised orange brown speckles (lenticels).
Leaves alternate pinnate, to 30 cm long, leaflets 7- 15, irregularly lobed and toothed, to 8 cm long.
Flowers yellow, about 1 cm wide in large branched clusters to 35 cm long, June-July.
Fruit papery 3-parted inflated capsule to 6 cm long, seeds pea-like (Dirr 1990; Rehder 1986).
Wetland status: NL.
Frequency in New York City: Infrequent.
Habitat: Escaped from cultivation.