Bauhinia x blakeana
A small/medium nearly evergreen tree with short, crooked trunk with roundish bilobed leaves cleft about some (way usually not overlapping along the inner margin). Flowers are large, purple with five petals.
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Butea monosperma
Bengali: Palaash/Kingshuk Hindi: Dhak
An ungainly tree with bent trunk, large trifoliate leaves with roundish leaflets, conspicuous in the early spring when masses of scarlet flowers bloom in usually leafless tree.