Zanthoxylum clava-herculis.©BobbyHattaway.www.discoverlife.org (Accessed 8/2014)

Zanthoxylum clava-herculis is a shrub or small tree, 3-15 m tall, trunks with large, broad-based prickles and corky knobs.

Leaves alternate, pinnate, leaflets 5-19, lance-shaped, sides unequal.

Flowers yellow-green, sexes separate; in large, branched clusters.

Fruit 0.5 cm, pitted.

Wetland status: NL.

Frequency in NYC: Very infrequent.

Origin: Delaware and south.

Habitat: Overgrown horticultural specimen.