Ailanthus Desf.
Trees, usually deciduous. Lvs imparipinnate; leaflets somewhat oblique at base, with a ± conspicuous gland on each side beneath towards the base. Fls in large terminal panicles, ⚥ or unisexual. Calyx 5-lobed. Petals 5, valvate, oblong. Stamens 10, inserted at base of 10-lobed disc. Carpels 2-5, connate or free below; styles connate with elongated, divergent stigmas. Fr. a samara, the compressed seed in the middle. Cotyledons suborbicular or broadly ovate.
10 spp., India to China and S. to N.E. Queensland. Naturalised sp. 1.