The members of the genus are possessed of the following characters: - Bark often papyraceous; leaves deciduous, compound, alternate and imparipinnate, with leaflets serrate or entire; flowers in racemes or panicles, white, green, yellowish or pink, having a.
19), the leaf is unequally pinnate (imparipinnate); when the leaflets or pinnae are placed alternately on either side of the midrib, and not directly opposite to each other, the leaf is alternately pinnate; and when the pinnae are of different sizes, the leaf is interruptedly pinnate.
- Imparipinnate (unequally pinnate) leaf of Robinia.
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