Ptelea trifoliata is a shrub to about 8 m tall.
Leaves 3-parted, margins not toothed (entire), leaflets stalkless.
Flowers small, green, May-June.
Fruit becoming dry, 2 cm wide, 1-seeded, nearly flat, with a broad circular wing.
Wetland status: FAC.
Frequency in NYC: Rare (NYS S1S2 E).
Habitat: Possibly planted. Moist soil, in undisturbed areas, soil pH 4.8-7 (USDA, NRCS 2010).
Notes: Apparently reproducing in Central Park N. Woods.