Ptelea trifoliata.commons.wikimedia.org (Accessed 7/2014).

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).

Origin: Native.

Habitat: Possibly planted. Moist soil, in undisturbed areas, soil pH 4.8-7 (USDA, NRCS 2010).

Notes: Apparently reproducing in Central Park N. Woods.