genus Ailanthus

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Noun

1.

genus Ailanthus - small genus of east Asian and Chinese trees with odd-pinnate leaves and long twisted samaras rosid dicot genus - a genus of dicotyledonous plants family Simaroubaceae, quassia family, Simaroubaceae - chiefly tropical trees and shrubs with bitter bark having dry usually one-seeded winged fruit ailanthus - any of several deciduous Asian trees of the genus Ailanthus Ailanthus altissima, tree of heaven, tree of the gods - deciduous rapidly growing tree of China with foliage like sumac and sweetish fetid flowers; widely planted in United States as a street tree because of its resistance to pollution