Amorpha is a genus of plants in the pea family Fabaceae. All the species are native to the United States and are commonly known as false indigo. The flowers are bell-shaped and grow in racemes.
The desert false indigo, or indigo bush, Amorpha fruticosa, is a shrub that grows from 3 m to 45 m tall. It is an invasive plant that has spread throughout the United States and has been introduced to central and southern Europe.
