Psorodendron

Psorodendron is a genus of flowering plants in the family Fabaceae. It includes five species native to the southwestern United States and northwestern Mexico.

Psorodendron arborescens – Mojave indigo bush
Psorodendron fremontii – Fremont's indigo bush
Psorodendron kingii – Lahontan indigo bush, King's dalea
Psorodendron schottii – Schott's dalea
Psorodendron spinosum – smoketree, smokethorn