Purple Bean Tree (Catalpa bignonioides 'Purpurea')
Catalpa × erubescens 'Purpurea', a native of the southeastern USA, is a medium tree to around 12-15m tall and 8 metres wide. Foliage starts out blackish-purple in spring turning dark green as leaves develop. Flowers are white with orange and purple markings.
Grown for its showy flowers and foliage, C. × erubescens 'Purpurea' has gained the Royal Horticultural Society's Award of Garden Merit.