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Tree of heaven

Ailanthus altissima · Quassia family (Simaroubaceae)

Very large pinnate leaf with 13–41 leaflets, each with 1–3 coarse teeth at the base; stinks when crushed.

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Not to be confused with

• Walnut: fewer (5–9), larger leaflets without teeth, and a pleasant smell. Difference from walnut
• Ash: opposite leaves with toothed leaflets. Difference from ash

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